Meta: Removed unused LibVT from the GN build

Meta/gn/secondary/Userland/Libraries/LibVT/BUILD.gn

@@ -1,12 +0,0 @@
-import("//Meta/gn/build/compiled_action.gni")
-
-compiled_action("generate_vt_state_machine") {
-  tool = "//Meta/Lagom/Tools/CodeGenerators/StateMachineGenerator"
-  inputs = [ "StateMachine.txt" ]
-  outputs = [ "$root_gen_dir/LibVT/EscapeSequenceStateMachine.h" ]
-  args = [
-    "-o",
-    rebase_path(outputs[0], root_build_dir),
-    rebase_path(inputs[0], root_build_dir),
-  ]
-}