Remove deleted files from rspec order todos

What does this MR do and why?

This MR removes deleted files from rspec_order_todo.yml. I used this script to facilitate this change.

$ bash cleanup_removed.sh
Retrieving excludes from: spec/support/rspec_order_todo.yml
Removing entries for ee/spec/controllers/profiles/usage_quotas_controller_spec.rb
Removing entries for ee/spec/lib/gitlab/ip_address_state_spec.rb
Removing entries for ee/spec/services/ee/namespace_settings/assign_attribute_service_spec.rb
Removing entries for ee/spec/services/elastic/cluster_reindexing_service_spec.rb
Removing entries for ee/spec/services/groups/memberships/export_service_spec.rb
Removing entries for spec/controllers/profiles/gpg_keys_controller_spec.rb
Removing entries for spec/lib/banzai/filter/autolink_filter_spec.rb
Removing entries for spec/lib/banzai/filter/blockquote_fence_filter_spec.rb
Removing entries for spec/lib/banzai/filter/table_of_contents_filter_spec.rb
Removing entries for spec/lib/gitlab/ci/yaml_processor/feature_flags_spec.rb
Removing entries for spec/lib/gitlab/import/logger_spec.rb
Removing entries for spec/models/concerns/sensitive_serializable_hash_spec.rb

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