chore: fix typing (#15214)

## Description

Not sure why but these errors are blocking #15125

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## Testing

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## Risks

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## Additional Notes

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Author: taegyunkim

ddtrace/internal/forksafe.py

@@ -140,12 +140,12 @@ def _reset_object(self):
 
 
 def Lock() -> _unpatched.threading_Lock:
-    return ResetObject(_unpatched.threading_Lock)  # type: ignore
+    return ResetObject(_unpatched.threading_Lock)
 
 
 def RLock() -> _unpatched.threading_RLock:
-    return ResetObject(_unpatched.threading_RLock)  # type: ignore
+    return ResetObject(_unpatched.threading_RLock)
 
 
 def Event() -> _unpatched.threading_Event:
-    return ResetObject(_unpatched.threading_Event)  # type: ignore
+    return ResetObject(_unpatched.threading_Event)

ddtrace/internal/safety.py

@@ -81,20 +81,20 @@ def __getattr__(self, name):
                 raise AttributeError("Access denied")
             else:
                 return super(SafeObjectProxy, self).__wrapped__
-        return type(self).safe(super(SafeObjectProxy, self).__getattr__(name))  # type: ignore
+        return type(self).safe(super(SafeObjectProxy, self).__getattr__(name))
 
     def __getitem__(self, item):
         # type: (Any) -> Any
-        return type(self).safe(super(SafeObjectProxy, self).__getitem__(item))  # type: ignore
+        return type(self).safe(super(SafeObjectProxy, self).__getitem__(item))
 
     def __iter__(self):
         # type: () -> Any
-        return iter(type(self).safe(_) for _ in super(SafeObjectProxy, self).__iter__())  # type: ignore
+        return iter(type(self).safe(_) for _ in super(SafeObjectProxy, self).__iter__())
 
     def items(self):
         # type: () -> Iterator[Tuple[Any, Any]]
         return (
-            (type(self).safe(k), type(self).safe(v)) for k, v in super(SafeObjectProxy, self).__getattr__("items")()  # type: ignore
+            (type(self).safe(k), type(self).safe(v)) for k, v in super(SafeObjectProxy, self).__getattr__("items")()
         )
 
     # Custom object representations might cause side-effects