avoid generating duplicate notes

Author: KevinRK29

mypy/messages.py

@@ -1182,15 +1182,6 @@ def no_variant_matches_arguments(
                         code=code,
                     )
 
-            if not all_kwargs_confident:
-                self.note(
-                    f"Possible overload variant{plural_s(len(overload.items))}:",
-                    context,
-                    code=code,
-                )
-                for item in overload.items:
-                    self.note(pretty_callable(item, self.options), context, offset=4, code=code)
-
             if all_kwargs_confident and len(unexpected_kwargs) == len(arg_types):
                 return
 

test-data/unit/check-expressions.test

@@ -2609,10 +2609,10 @@ def f(foobar: str) -> None: ...
 def f(foobar: Union[int, str]) -> None: pass
 
 f(random=[1,2,3]) # E: Unexpected keyword argument "random" for overloaded function "f" \
+                  # E: No overload variant of "f" matches argument type "list[int]" \
                   # N: Possible overload variants: \
                   # N:     def f(foobar: int) -> None \
-                  # N:     def f(foobar: str) -> None \
-                  # E: No overload variant of "f" matches argument type "list[int]"
+                  # N:     def f(foobar: str) -> None
 [builtins fixtures/list.pyi]
 
 [case testOverloadMultipleUnexpectedKeywordArgs]
@@ -2661,10 +2661,10 @@ def f(foobar: Union[int, str]) -> None: pass
 
 f(fobar=1, other=[1,2,3]) # E: Unexpected keyword argument "fobar" for overloaded function "f"; did you mean "foobar"? \
                           # E: Unexpected keyword argument "other" for overloaded function "f" \
+                          # E: No overload variant of "f" matches argument types "int", "list[int]" \
                           # N: Possible overload variants: \
                           # N:     def f(foobar: int) -> None \
-                          # N:     def f(foobar: str) -> None \
-                          # E: No overload variant of "f" matches argument types "int", "list[int]"
+                          # N:     def f(foobar: str) -> None
 [builtins fixtures/list.pyi]
 
 [case testOverloadPositionalArgTypeMismatch]