Remove unnecessary code

Author: buenaflor

dart/lib/src/hub.dart

@@ -602,7 +602,6 @@ class _WeakMap {
       return;
     }
     throwable = exceptionsWrapperUtil.wrapIfUnsupportedType(throwable);
-    _expando[throwable];
     try {
       if (_expando[throwable] == null) {
         _expando[throwable] = MapEntry(span, transaction);
@@ -631,7 +630,6 @@ class _WeakMap {
         exception: exception,
         stackTrace: stackTrace,
       );
-      print('hahaa');
     }
     return null;
   }

dart/test/utils/wrapper_exception_util_test.dart

@@ -71,7 +71,7 @@ void main() {
 
       final third =
           exceptionWrapperUtil.wrapIfUnsupportedType(unsupportedThrowable);
-      expect(fixture.expando[third], 2);
+      expect(fixture.expando[third], 2.0);
     });
   });