chore(storage): Remove storage::internal::CommonMetadata and storage::internal::AccessControlCommon (#15138)

* remove CommonMetadata and AccessControlCommon

* minor fixes

* minor fixes

---------

Co-authored-by: Denis DelGrosso <85250797+ddelgrosso1@users.noreply.github.com>

Author: 2 people

google/cloud/storage/google_cloud_cpp_storage.bzl

@@ -46,17 +46,13 @@ google_cloud_cpp_storage_hdrs = [
     "iam_policy.h",
     "idempotency_policy.h",
     "include_folders_as_prefixes.h",
-    "internal/access_control_common.h",
-    "internal/access_control_common_parser.h",
     "internal/access_token_credentials.h",
     "internal/base64.h",
     "internal/binary_data_as_debug_string.h",
     "internal/bucket_access_control_parser.h",
     "internal/bucket_acl_requests.h",
     "internal/bucket_metadata_parser.h",
     "internal/bucket_requests.h",
-    "internal/common_metadata.h",
-    "internal/common_metadata_parser.h",
     "internal/complex_option.h",
     "internal/compute_engine_util.h",
     "internal/connection_factory.h",
@@ -178,7 +174,6 @@ google_cloud_cpp_storage_srcs = [
     "hmac_key_metadata.cc",
     "iam_policy.cc",
     "idempotency_policy.cc",
-    "internal/access_control_common_parser.cc",
     "internal/access_token_credentials.cc",
     "internal/base64.cc",
     "internal/bucket_access_control_parser.cc",

google/cloud/storage/google_cloud_cpp_storage.cmake

@@ -69,9 +69,6 @@ add_library(
     idempotency_policy.cc
     idempotency_policy.h
     include_folders_as_prefixes.h
-    internal/access_control_common.h
-    internal/access_control_common_parser.cc
-    internal/access_control_common_parser.h
     internal/access_token_credentials.cc
     internal/access_token_credentials.h
     internal/base64.cc
@@ -85,8 +82,6 @@ add_library(
     internal/bucket_metadata_parser.h
     internal/bucket_requests.cc
     internal/bucket_requests.h
-    internal/common_metadata.h
-    internal/common_metadata_parser.h
     internal/complex_option.h
     internal/compute_engine_util.cc
     internal/compute_engine_util.h
@@ -451,8 +446,6 @@ if (BUILD_TESTING)
         hashing_options_test.cc
         hmac_key_metadata_test.cc
         idempotency_policy_test.cc
-        internal/access_control_common_parser_test.cc
-        internal/access_control_common_test.cc
         internal/access_token_credentials_test.cc
         internal/base64_test.cc
         internal/bucket_acl_requests_test.cc