Update ui tests for error message deduplication.

Author: michaelwoerister

src/test/ui/span/macro-ty-params.stderr

@@ -4,12 +4,6 @@ error: unexpected generic arguments in path
 20 |     m!(MyTrait<>);
    |        ^^^^^^^^^
 
-error: unexpected generic arguments in path
-  --> $DIR/macro-ty-params.rs:20:8
-   |
-20 |     m!(MyTrait<>);
-   |        ^^^^^^^^^
-
 error: generic arguments in macro path
   --> $DIR/macro-ty-params.rs:18:8
    |