Fix Broken Tilde and Grave (Backtick/Backquote)

This was copied from debauchee/barrier#1711 by
@dgentry

Author: benklop

src/lib/platform/OSXKeyState.cpp

@@ -122,8 +122,6 @@ static const KeyEntry    s_controlKeys[] = {
     { kKeyEisuToggle, kVK_JIS_Eisu },
     { kKeyKana, kVK_JIS_Kana },
     { kKeyMuhenkan, s_int5VK },
-    { kKeyHenkan, s_int4VK },
-    { kKeyZenkaku, kVK_ANSI_Grave }
 };