chore: drop 3.8 support in bytecode instrumentation (#15314)

## Description

We clean up sources by removing CPython 3.8 support from bytecode
instrumentation.

Author: P403n1x87

ddtrace/internal/wrapping/asyncs.py

@@ -705,94 +705,6 @@
         """
     )
 
-elif PY >= (3, 8):
-    COROUTINE_ASSEMBLY.parse(
-        r"""
-            get_awaitable
-            load_const                      None
-            yield_from
-        """
-    )
-
-    ASYNC_GEN_ASSEMBLY.parse(
-        r"""
-        setup_finally                       @stopiter
-            dup_top
-            store_fast                      $__ddgen
-            load_attr                       $asend
-            store_fast                      $__ddgensend
-            load_fast                       $__ddgen
-            load_attr                       $__anext__
-            call_function                   0
-
-        loop:
-            get_awaitable
-            load_const                      None
-            yield_from
-
-        yield:
-        setup_finally                       @genexit
-            yield_value
-        pop_block
-            load_fast                       $__ddgensend
-            rot_two
-            call_function                   1
-            jump_absolute                   @loop
-
-        genexit:
-            dup_top
-            load_const                      GeneratorExit
-            compare_op                      asm.Compare.EXC_MATCH
-            pop_jump_if_false               @exc
-            pop_top
-            pop_top
-            pop_top
-            pop_top
-            load_fast                       $__ddgen
-            load_attr                       $aclose
-            call_function                   0
-            get_awaitable
-            load_const                      None
-            yield_from
-        pop_except
-            return_value
-
-        exc:
-            pop_top
-            pop_top
-            pop_top
-            pop_top
-            load_fast                       $__ddgen
-            load_attr                       $athrow
-            load_const                      sys.exc_info
-            call_function                   0
-            call_function_ex                0
-            get_awaitable
-            load_const                      None
-            yield_from
-            rot_four
-        pop_except
-            jump_absolute                   @yield
-
-        stopiter:
-            dup_top
-            load_const                      StopAsyncIteration
-            compare_op                      asm.Compare.EXC_MATCH
-            pop_jump_if_false               @propagate
-            pop_top
-            pop_top
-            pop_top
-            pop_except
-            load_const                      None
-            return_value
-
-        propagate:
-        end_finally
-            load_const                      None
-            return_value
-        """
-    )
-
 else:
     msg = "No async wrapping support for Python %d.%d" % PY[:2]
     raise RuntimeError(msg)

ddtrace/internal/wrapping/context.py

@@ -283,37 +283,6 @@
     )
 
 
-elif sys.version_info >= (3, 8):
-    CONTEXT_HEAD.parse(
-        r"""
-            load_const                  {context}
-            setup_with                  @_except
-            pop_top
-        _except:
-        """
-    )
-
-    CONTEXT_RETURN.parse(
-        r"""
-            load_const                  {context}
-            load_method                 $__return__
-            rot_three
-            rot_three
-            call_method                 1
-        """
-    )
-
-    CONTEXT_FOOT.parse(
-        r"""
-            with_cleanup_start
-            with_cleanup_finish
-            end_finally
-            load_const                  None
-            return_value
-        """
-    )
-
-
 # This is abstract and should not be used directly
 class BaseWrappingContext(ABC):
     __priority__: int = 0

ddtrace/internal/wrapping/generators.py

@@ -476,75 +476,6 @@
         """
     )
 
-elif PY >= (3, 8):
-    GENERATOR_ASSEMBLY.parse(
-        r"""
-        setup_finally                   @stopiter
-            dup_top
-            store_fast                  $__ddgen
-            load_attr                   $send
-            store_fast                  $__ddgensend
-            load_const                  next
-            load_fast                   $__ddgen
-
-        loop:
-            call_function               1
-
-        yield:
-        setup_finally                   @genexit
-            yield_value
-        pop_block
-            load_fast                   $__ddgensend
-            rot_two
-            jump_absolute               @loop
-
-        genexit:
-            dup_top
-            load_const                  GeneratorExit
-            compare_op                  asm.Compare.EXC_MATCH
-            pop_jump_if_false           @exc
-            pop_top
-            pop_top
-            pop_top
-            pop_top
-            load_fast                   $__ddgen
-            load_attr                   $close
-            call_function               0
-            return_value
-
-        exc:
-            pop_top
-            pop_top
-            pop_top
-            pop_top
-            load_fast                   $__ddgen
-            load_attr                   $throw
-            load_const                  sys.exc_info
-            call_function               0
-            call_function_ex            0
-            rot_four
-        pop_except
-            jump_absolute               @yield
-
-        stopiter:
-            dup_top
-            load_const                  StopIteration
-            compare_op                  asm.Compare.EXC_MATCH
-            pop_jump_if_false           @propagate
-            pop_top
-            pop_top
-            pop_top
-        pop_except
-            load_const                  None
-            return_value
-
-        propagate:
-        end_finally
-            load_const                  None
-            return_value
-        """
-    )
-
 else:
     msg = "No generator wrapping support for Python %d.%d" % PY[:2]
     raise RuntimeError(msg)