Remove more 3DS-specific code.

src/core/hle/service/gsp_gpu.cpp

@@ -7,21 +7,5 @@
 namespace Service {
 namespace GSP {
 
-/**
- * Signals that the specified interrupt type has occurred to userland code
- * @param interrupt_id ID of interrupt that is being signalled
- * @todo This should probably take a thread_id parameter and only signal this thread?
- * @todo This probably does not belong in the GSP module, instead move to video_core
- */
-void SignalInterrupt(InterruptId interrupt_id) {
-    UNIMPLEMENTED();
-}
-
-GSP_GPU::GSP_GPU() {
-}
-
-GSP_GPU::~GSP_GPU() {
-}
-
 } // namespace GSP
 } // namespace Service