Fix duplicate definition in German keyboard layout

teensy3/keylayouts.h

@@ -551,14 +551,11 @@ extern "C"{
 #define SHIFT_MASK		0x0040
 #define ALTGR_MASK		0x0080
 #define DEADKEYS_MASK		0x0700
-#define SHIFT_MASK		0x0100
-#define ALTGR_MASK		0x0200
 #define	CIRCUMFLEX_BITS		0x0300
 #define ACUTE_ACCENT_BITS	0x0400
 #define GRAVE_ACCENT_BITS	0x0500
 #define KEYCODE_TYPE		uint16_t
 #define DEADKEY_CIRCUMFLEX	KEY_TILDE
-//#define DEADKEY_CIRCUMFLEX	KEY_NON_US_100
 #define DEADKEY_ACUTE_ACCENT	KEY_EQUAL
 #define DEADKEY_GRAVE_ACCENT	KEY_EQUAL + SHIFT_MASK
 #define KEY_NON_US_100		63