Remove unnecessary link against libGL/libEGL in renderdoccmd
Remove unnecessary link against libGL/libEGL in renderdoccmd

* This means it's easier to build with GLES support by default
baldurk/renderdoc,baldurk/renderdoc,googlestadia/renderdoc,googlestadia/renderdoc,googlestadia/renderdoc,TurtleRockStudios/renderdoc_public,TurtleRockStudios/renderdoc_public,TurtleRockStudios/renderdoc_public,Zorro666/renderdoc,baldurk/renderdoc,googlestadia/renderdoc,googlestadia/renderdoc,baldurk/renderdoc,TurtleRockStudios/renderdoc_public,TurtleRockStudios/renderdoc_public,Zorro666/renderdoc,baldurk/renderdoc,Zorro666/renderdoc,googlestadia/renderdoc,Zorro666/renderdoc,TurtleRockStudios/renderdoc_public,Zorro666/renderdoc,baldurk/renderdoc,Zorro666/renderdoc