fixing EXpected to fail issue

Author: KeiOshima

ci/code_checks.sh

@@ -98,7 +98,6 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         -i "pandas.Index.get_indexer_for PR01,SA01" \
         -i "pandas.Index.get_indexer_non_unique PR07,SA01" \
         -i "pandas.Index.get_loc PR07,RT03,SA01" \
-        -i "pandas.Index.identical PR01,SA01" \
         -i "pandas.Index.join PR07,RT03,SA01" \
         -i "pandas.Index.names GL08" \
         -i "pandas.Index.nunique RT03" \