refactor: remove debugging? utility

Author: BuonOmo

lib/active_record/connection_adapters/cockroachdb/schema_statements.rb

@@ -112,16 +112,6 @@ def schema_names
           super - ["crdb_internal"]
         end
 
-        def add_index(table_name, column_name, **options)
-          super
-        rescue ActiveRecord::StatementInvalid => error
-          if debugging? && error.cause.class == PG::FeatureNotSupported
-            warn "#{error}\n\nThis error will be ignored and the index will not be created.\n\n"
-          else
-            raise error
-          end
-        end
-
         # ActiveRecord allows for tables to exist without primary keys.
         # Databases like PostgreSQL support this behavior, but CockroachDB does
         # not. If a table is created without a primary key, CockroachDB will add

lib/active_record/connection_adapters/cockroachdb_adapter.rb

@@ -145,10 +145,6 @@ def srs_database_columns
         }
       end
 
-      def debugging?
-        !!ENV["DEBUG_COCKROACHDB_ADAPTER"]
-      end
-
       def max_transaction_retries
         @max_transaction_retries ||= @config.fetch(:max_transaction_retries, 3)
       end

test/cases/helper_cockroachdb.rb

@@ -12,9 +12,6 @@ module ExcludeMessage
 # some rails specific messages are then ignored.
 Minitest::Test.make_my_diffs_pretty! if ENV['VERBOSE']
 
-# Turn on debugging for the test environment
-ENV['DEBUG_COCKROACHDB_ADAPTER'] = "1"
-
 # Override the load_schema_helper for the
 # two ENV variables COCKROACH_LOAD_FROM_TEMPLATE
 # and COCKROACH_SKIP_LOAD_SCHEMA that can