Remove error types

Author: davidhalter

conformance/tests/annotations_forward_refs.py

@@ -91,10 +91,6 @@ def __init__(self) -> None:
         self.ClassC = ClassC()
 
 
-assert_type(ClassD.str, Any)
-assert_type(ClassD.x, Any)
-
-
 # > If a triple quote is used, the string should be parsed as though it is implicitly
 # > surrounded by parentheses. This allows newline characters to be
 # > used within the string literal.