add grep for it

Author: lrvideckis

tests/scripts/grep_clangformat_cppcheck.sh

@@ -32,6 +32,9 @@ grep "ssize" --recursive ../library/ && exit 1
 echo "check vi instead of vector<int>"
 grep "vector<int>" --recursive ../library/**/*.hpp && exit 1
 
+echo "check no basic_string"
+grep "basic_string" --recursive ../library/**/*.hpp library_checker_aizu_tests/**/*.test.cpp && exit 1
+
 echo "check begin(arr) instead of arr.begin(), similarly for end, rbegin, rend, empty, size:"
 # TODO: remove this define filter if/when we move to -std=c++20
 grep --invert-match --fixed-strings "#define" --recursive ../library/ library_checker_aizu_tests/ |