Remove FIXME since there is nothing to be fixed.

GuillaumeGomez · GuillaumeGomez · commit 7bad85e81534 · 2021-10-16T22:15:06.000+02:00
The errors are deduplicated when displayed to users. They only appear
multiple times in UI tests.
diff --git a/src/test/rustdoc-ui/ambiguous-inherent-assoc-ty.rs b/src/test/rustdoc-ui/ambiguous-inherent-assoc-ty.rs
@@ -11,7 +11,6 @@ impl Struct {
     pub const AssocConst: Self::AssocTy = 42;
     //~^ ERROR ambiguous associated type
     //~| HELP use fully-qualified syntax
-    // FIXME: for some reason, the error is shown twice with rustdoc but only once with rustc
     //~| ERROR ambiguous associated type
     //~| HELP use fully-qualified syntax
 }

Original file line number	Diff line number	Diff line change
`@@ -11,7 +11,6 @@ impl Struct {`
`11`	`11`	`pub const AssocConst: Self::AssocTy = 42;`
`12`	`12`	`//~^ ERROR ambiguous associated type`
`13`	`13`	`//~\| HELP use fully-qualified syntax`
`14`		`- // FIXME: for some reason, the error is shown twice with rustdoc but only once with rustc`
`15`	`14`	`//~\| ERROR ambiguous associated type`
`16`	`15`	`//~\| HELP use fully-qualified syntax`
`17`	`16`	`}`