diff --git a/ruby/ql/lib/codeql/ruby/frameworks/ActiveRecord.qll b/ruby/ql/lib/codeql/ruby/frameworks/ActiveRecord.qll
index 50f6986f77aa3..deaa0a6427a02 100644
--- a/ruby/ql/lib/codeql/ruby/frameworks/ActiveRecord.qll
+++ b/ruby/ql/lib/codeql/ruby/frameworks/ActiveRecord.qll
@@ -103,9 +103,6 @@ class ActiveRecordModelClass extends ClassDeclaration {
     cls = activeRecordBaseClass().getADescendentModule() and this = cls.getADeclaration()
   }
 
-  // Gets the class declaration for this class and all of its super classes
-  private ModuleBase getAllClassDeclarations() { result = cls.getAnAncestor().getADeclaration() }
-
   /** Gets the class as a `DataFlow::ClassNode`. */
   DataFlow::ClassNode getClassNode() { result = cls }
 }