Remove type annotations from test output

Author: Julfried

tests/pyreverse/functional/class_diagrams/aggregation/fields.mmd

@@ -1,18 +1,18 @@
 classDiagram
   class A {
-    x : P
+    x
   }
   class B {
-    x : P
+    x
   }
   class C {
-    x : P
+    x
   }
   class D {
-    x : P
+    x
   }
   class E {
-    x : P
+    x
   }
   class P {
   }