refactor: refactor KBM input code

Minecraft.Client/Input.h

@@ -6,20 +6,17 @@ class Input
 public:
 	float xa;
     float ya;
-	float sprintForward;
 
     bool wasJumping;
     bool jumping;
     bool sneaking;
-	bool usingKeyboardMovement;
-    
-	Input();	// 4J - added
+	bool sprinting;
+
+	Input();
 
     virtual void tick(LocalPlayer *player);
 
 private:
-
     bool lReset;
     bool rReset;
-	bool m_gamepadSneaking;
 };