fix(nest): remove duplicate storage of method decorator values

Now that we are pulling the method descriptor on get we don't need to save like a property

packages/nest/src/metadata-decorator.ts

@@ -169,14 +169,14 @@ export const createMetadataDecorator = <
  return val;
  }
 
- // MethodDecorator / PropertyDecorator
  if (property) {
+ // PropertyDecorator
  let val = getMetadata(id, target, property);
  if (val !== undefined) {
  return val;
  }
- // Fall back to descriptor
- // aka: get(new Class().method)
+
+ // MethodDecorator
  const descriptor = Object.getOwnPropertyDescriptor(
  target.prototype,
  property,
@@ -267,10 +267,6 @@ export const createMetadataDecorator = <
  type: 'method',
  });
  }
- // Allow access via: get(Class, 'method')
- defineMetadata(id, next, staticCls, property!);
- // Allow access via: get(new Class().method)
- // NestJS does this
  defineMetadata(id, next, descriptor.value);
  return descriptor;
  }