internal/rosa/cmake: remove variant

This has no effect outside formatting of name and is a remnant of the old llvm helpers.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/cmake.go

@@ -119,9 +119,6 @@ func init() {
 
 // CMakeHelper is the [CMake] build system helper.
 type CMakeHelper struct {
-	// Joined with name with a dash if non-empty.
-	Variant string
-
 	// Path elements joined with source.
 	Append []string
 
@@ -136,14 +133,6 @@ type CMakeHelper struct {
 
 var _ Helper = new(CMakeHelper)
 
-// name returns its arguments and an optional variant string joined with '-'.
-func (attr *CMakeHelper) name(name, version string) string {
-	if attr != nil && attr.Variant != "" {
-		name += "-" + attr.Variant
-	}
-	return name + "-" + version
-}
-
 // extra returns a hardcoded slice of [CMake] and [Ninja].
 func (attr *CMakeHelper) extra(int) P {
 	if attr != nil && attr.Make {