Removed all superfluous #include's

Automatically optimized by CLion IDE with manual corrections

src/c_bind.cpp

@@ -34,14 +34,11 @@
 
 #include "doomtype.h"
 #include "doomdef.h"
-#include "cmdlib.h"
 #include "c_dispatch.h"
 #include "c_bind.h"
 #include "g_level.h"
 #include "hu_stuff.h"
-#include "gi.h"
 #include "configfile.h"
-#include "i_system.h"
 #include "d_event.h"
 #include "w_wad.h"
 #include "templates.h"
@@ -49,9 +46,6 @@
 #include "vm.h"
 #include "i_time.h"
 
-#include <math.h>
-#include <stdlib.h>
-
 const char *KeyNames[NUM_KEYS] =
 {
 	// This array is dependant on the particular keyboard input