UniformGroup: Delete unused file. (#30002)

src/nodes/core/UniformGroup.js

@@ -1,13 +0,0 @@
-class UniformGroup {
-
-	constructor( name ) {
-
-		this.name = name;
-
-		this.isUniformGroup = true;
-
-	}
-
-}
-
-export default UniformGroup;