ANDROID: Remove old and broken keymapper code

This isn't needed after commit 665e472.

backends/platform/android/android.cpp

@@ -56,7 +56,6 @@
 #include "common/config-manager.h"
 
 #include "backends/audiocd/default/default-audiocd.h"
-#include "backends/keymapper/keymapper.h"
 #include "backends/mutex/pthread/pthread-mutex.h"
 #include "backends/saves/default/default-saves.h"
 #include "backends/timer/default/default-timer.h"
@@ -332,10 +331,6 @@ void OSystem_Android::initBackend() {
 	else
 		ConfMan.setBool("swap_menu_and_back_buttons", false);
 
-	// must happen before creating TimerManager to avoid race in
-	// creating EventManager
-	setupKeymapper();
-
 	// BUG: "transient" ConfMan settings get nuked by the options
 	// screen. Passing the savepath in this way makes it stick
 	// (via ConfMan.registerDefault)

backends/platform/android/android.h

@@ -80,8 +80,6 @@ private:
 
 	Common::String getSystemProperty(const char *name) const;
 
-	void setupKeymapper();
-
 protected:
 	virtual Common::EventSource *getDefaultEventSource() { return this; }
 

backends/platform/android/events.cpp

@@ -52,31 +52,6 @@ static inline T scalef(T in, float numerator, float denominator) {
 
 static const int kQueuedInputEventDelay = 50;
 
-void OSystem_Android::setupKeymapper() {
-#ifdef ENABLE_KEYMAPPER
-	using namespace Common;
-
-	Keymapper *mapper = getEventManager()->getKeymapper();
-
-	HardwareInputSet *inputSet = new HardwareInputSet();
-
-	keySet->addHardwareInput(
-		new HardwareInput("n", KeyState(KEYCODE_n), "n (vk)"));
-
-	mapper->registerHardwareInputSet(inputSet);
-
-	Keymap *globalMap = new Keymap(kGlobalKeymapName);
-	Action *act;
-
-	act = new Action(globalMap, "VIRT", "Display keyboard");
-	act->addKeyEvent(KeyState(KEYCODE_F7, ASCII_F7, KBD_CTRL));
-
-	mapper->addGlobalKeymap(globalMap);
-
-	mapper->pushKeymap(kGlobalKeymapName);
-#endif
-}
-
 void OSystem_Android::pushEvent(int type, int arg1, int arg2, int arg3,
 								int arg4, int arg5, int arg6) {
 	Common::Event e;