Remove detectInstance

Author: wagenet

packages/@ember/object/core.ts

@@ -456,10 +456,6 @@ class CoreObject {
     return false;
   }
 
-  static detectInstance(obj: unknown) {
-    return obj instanceof this;
-  }
-
   static get superclass() {
     let c = Object.getPrototypeOf(this);
     return c !== Function.prototype ? c : undefined;

packages/@ember/object/tests/detectInstance_test.js

@@ -12,10 +12,7 @@ moduleFor(
       // simulate these classes being defined on a Namespace
       setName(Foo, 'Foo');
 
-      assert.equal(
-        foo.toString(),
-        '<(unknown):' + guidFor(foo) + '>'
-      );
+      assert.equal(foo.toString(), '<(unknown):' + guidFor(foo) + '>');
     }
   }
 );