libobs: Remove _WIN32 ifdef from enum

Ensures that hotkeys cannot become invalid if config data is moved over
to another operating system.

libobs/obs-hotkeys.h

@@ -484,7 +484,6 @@ OBS_HOTKEY(OBS_KEY_UNDO)
 OBS_HOTKEY(OBS_KEY_FRONT)
 OBS_HOTKEY(OBS_KEY_PROPS)
 
-#ifdef _WIN32
 OBS_HOTKEY(OBS_KEY_VK_CANCEL)
 OBS_HOTKEY(OBS_KEY_0x07)
 OBS_HOTKEY(OBS_KEY_0x0A)
@@ -652,4 +651,3 @@ OBS_HOTKEY(OBS_KEY_VK_ZOOM)
 OBS_HOTKEY(OBS_KEY_VK_NONAME)
 OBS_HOTKEY(OBS_KEY_VK_PA1)
 OBS_HOTKEY(OBS_KEY_VK_OEM_CLEAR)
-#endif