{CI} Remove unused globals (#31159)

Author: necusjz

src/azure-cli/azure/cli/command_modules/network/azure_stack/zone_file/parse_zone_file.py

@@ -289,8 +289,6 @@ def _add_record_names(text):
     Go through each line of the text and ensure that
     a name is defined.  Use previous record name if there is none.
     """
-    global SUPPORTED_RECORDS
-
     lines = text.split("\n")
     ret = []
     previous_record_name = None

src/azure-cli/azure/cli/command_modules/network/zone_file/parse_zone_file.py

@@ -293,8 +293,6 @@ def _add_record_names(text):
     Go through each line of the text and ensure that
     a name is defined.  Use previous record name if there is none.
     """
-    global SUPPORTED_RECORDS
-
     lines = text.split("\n")
     ret = []
     previous_record_name = None