Fix linter.

Author: mbobrovskyi

slice/internal/util/testing/error_matchers.go

@@ -67,7 +67,6 @@ func BeError(errorType ErrorType) types.GomegaMatcher {
 func (matcher *errorMatcher) Match(actual any) (success bool, err error) {
 	err, ok := actual.(error)
 	if !ok {
-		//nolint:staticcheck // We keep the error capitalized for consistency with built-in matchers.
 		return false, fmt.Errorf("Error matcher expects an error.  Got:\n%s", format.Object(actual, 1))
 	}