Remove duplicate config .pep8speaks.yml (pandas-dev#26226)

.pep8speaks.yml

@@ -2,18 +2,3 @@
 
 scanner:
     diff_only: True  # If True, errors caused by only the patch are shown
-
-# Opened issue in pep8speaks, so we can directly use the config in setup.cfg
-# (and avoid having to duplicate it here):
-# https://github.com/OrkoHunter/pep8speaks/issues/95
-
-pycodestyle:
-    max-line-length: 79
-    ignore:
-        - W503,  # line break before binary operator
-        - W504,  # line break after binary operator
-        - E402,  # module level import not at top of file
-        - E731,  # do not assign a lambda expression, use a def
-        - C406,  # Unnecessary list literal - rewrite as a dict literal.
-        - C408,  # Unnecessary dict call - rewrite as a literal.
-        - C409   # Unnecessary list passed to tuple() - rewrite as a tuple literal.