diff --git a/app/models/wiki.rb b/app/models/wiki.rb
index 32d70fcd3b7..c9cb3b0b796 100644
--- a/app/models/wiki.rb
+++ b/app/models/wiki.rb
@@ -227,32 +227,22 @@ class Wiki
   end
 
   def create_page(title, content, format = :markdown, message = nil)
-    if Feature.enabled?(:gitaly_replace_wiki_create_page, container, type: :undefined)
-      with_valid_format(format) do |default_extension|
-        if file_exists_by_regex?(title)
-          raise_duplicate_page_error!
-        end
-
-        capture_git_error(:created) do
-          create_wiki_repository unless repository_exists?
-          sanitized_path = sluggified_full_path(title, default_extension)
-          repository.create_file(user, sanitized_path, content, **multi_commit_options(:created, message, title))
-          repository.expire_status_cache if repository.empty?
-          after_wiki_activity
-
-          true
-        rescue Gitlab::Git::Index::IndexError
-          raise_duplicate_page_error!
-        end
+    with_valid_format(format) do |default_extension|
+      if file_exists_by_regex?(title)
+        raise_duplicate_page_error!
       end
-    else
-      commit = commit_details(:created, message, title)
 
-      wiki.write_page(title, format.to_sym, content, commit)
-      repository.expire_status_cache if repository.empty?
-      after_wiki_activity
+      capture_git_error(:created) do
+        create_wiki_repository unless repository_exists?
+        sanitized_path = sluggified_full_path(title, default_extension)
+        repository.create_file(user, sanitized_path, content, **multi_commit_options(:created, message, title))
+        repository.expire_status_cache if repository.empty?
+        after_wiki_activity
 
-      true
+        true
+      rescue Gitlab::Git::Index::IndexError
+        raise_duplicate_page_error!
+      end
     end
   rescue Gitlab::Git::Wiki::DuplicatePageError => e
     @error_message = _("Duplicate page: %{error_message}" % { error_message: e.message })
@@ -395,17 +385,6 @@ class Wiki
     }
   end
 
-  def commit_details(action, message = nil, title = nil)
-    commit_message = build_commit_message(action, message, title)
-    git_user = Gitlab::Git::User.from_gitlab(user)
-
-    Gitlab::Git::Wiki::CommitDetails.new(user.id,
-                                         git_user.username,
-                                         git_user.name,
-                                         git_user.email,
-                                         commit_message)
-  end
-
   def build_commit_message(action, message, title)
     message.presence || default_message(action, title)
   end
diff --git a/config/feature_flags/undefined/gitaly_replace_wiki_create_page.yml b/config/feature_flags/undefined/gitaly_replace_wiki_create_page.yml
deleted file mode 100644
index 9b7a36cb2c0..00000000000
--- a/config/feature_flags/undefined/gitaly_replace_wiki_create_page.yml
+++ /dev/null
@@ -1,8 +0,0 @@
----
-name: gitaly_replace_wiki_create_page
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/83734
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/356983
-milestone: '15.0'
-type: undefined
-group: group::editor
-default_enabled: false
diff --git a/spec/support/shared_examples/models/wiki_shared_examples.rb b/spec/support/shared_examples/models/wiki_shared_examples.rb
index 6f17231a040..604c57768fe 100644
--- a/spec/support/shared_examples/models/wiki_shared_examples.rb
+++ b/spec/support/shared_examples/models/wiki_shared_examples.rb
@@ -540,14 +540,6 @@ RSpec.shared_examples 'wiki model' do
         end
       end
     end
-
-    context 'when feature flag :gitaly_replace_wiki_create_page is disabled' do
-      before do
-        stub_feature_flags(gitaly_replace_wiki_create_page: false)
-      end
-
-      it_behaves_like 'create_page tests'
-    end
   end
 
   describe '#update_page' do