internal/rosa/ninja: remove cmake dependency

This does not actually depend on cmake. This is left over from very early on.

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

internal/rosa/ninja.go

@@ -8,7 +8,6 @@ func (t Toolchain) newNinja() pkg.Artifact {
 		checksum = "ygKWMa0YV2lWKiFro5hnL-vcKbc_-RACZuPu0Io8qDvgQlZ0dxv7hPNSFkt4214v"
 	)
 	return t.New("ninja-"+version, 0, []pkg.Artifact{
-		t.Load(CMake),
 		t.Load(Python),
 		t.Load(Bash),
 	}, nil, nil, `