[AVR32] Remove last remains of libgcc

Two libgcc headers were left around even though all the actual code
borrowed from libgcc is gone. Delete them.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

arch/avr32/lib/libgcc.h

-/* Definitions for various functions 'borrowed' from gcc-3.4.3 */
-
-#define BITS_PER_UNIT	8
-
-typedef		 int QItype	__attribute__ ((mode (QI)));
-typedef unsigned int UQItype	__attribute__ ((mode (QI)));
-typedef		 int HItype	__attribute__ ((mode (HI)));
-typedef unsigned int UHItype	__attribute__ ((mode (HI)));
-typedef 	 int SItype	__attribute__ ((mode (SI)));
-typedef unsigned int USItype	__attribute__ ((mode (SI)));
-typedef		 int DItype	__attribute__ ((mode (DI)));
-typedef unsigned int UDItype	__attribute__ ((mode (DI)));
-typedef 	float SFtype	__attribute__ ((mode (SF)));
-typedef		float DFtype	__attribute__ ((mode (DF)));
-typedef int word_type __attribute__ ((mode (__word__)));
-
-#define W_TYPE_SIZE (4 * BITS_PER_UNIT)
-#define Wtype	SItype
-#define UWtype	USItype
-#define HWtype	SItype
-#define UHWtype	USItype
-#define DWtype	DItype
-#define UDWtype	UDItype
-#define __NW(a,b)	__ ## a ## si ## b
-#define __NDW(a,b)	__ ## a ## di ## b
-
-struct DWstruct {Wtype high, low;};
-
-typedef union
-{
-  struct DWstruct s;
-  DWtype ll;
-} DWunion;

arch/avr32/lib/longlong.h

-/* longlong.h -- definitions for mixed size 32/64 bit arithmetic.
-   Copyright (C) 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000
-   Free Software Foundation, Inc.
-
-   This definition file is free software; you can redistribute it
-   and/or modify it under the terms of the GNU General Public
-   License as published by the Free Software Foundation; either
-   version 2, or (at your option) any later version.
-
-   This definition file is distributed in the hope that it will be
-   useful, but WITHOUT ANY WARRANTY; without even the implied
-   warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-   See the GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
-
-/* Borrowed from gcc-3.4.3 */
-
-#define __BITS4 (W_TYPE_SIZE / 4)
-#define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2))
-#define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1))
-#define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2))
-
-#define count_leading_zeros(count, x) ((count) = __builtin_clz(x))
-
-#define __udiv_qrnnd_c(q, r, n1, n0, d) \
-  do {									\
-    UWtype __d1, __d0, __q1, __q0;					\
-    UWtype __r1, __r0, __m;						\
-    __d1 = __ll_highpart (d);						\
-    __d0 = __ll_lowpart (d);						\
-									\
-    __r1 = (n1) % __d1;							\
-    __q1 = (n1) / __d1;							\
-    __m = (UWtype) __q1 * __d0;						\
-    __r1 = __r1 * __ll_B | __ll_highpart (n0);				\
-    if (__r1 < __m)							\
-      {									\
-	__q1--, __r1 += (d);						\
-	if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */\
-	  if (__r1 < __m)						\
-	    __q1--, __r1 += (d);					\
-      }									\
-    __r1 -= __m;							\
-									\
-    __r0 = __r1 % __d1;							\
-    __q0 = __r1 / __d1;							\
-    __m = (UWtype) __q0 * __d0;						\
-    __r0 = __r0 * __ll_B | __ll_lowpart (n0);				\
-    if (__r0 < __m)							\
-      {									\
-	__q0--, __r0 += (d);						\
-	if (__r0 >= (d))						\
-	  if (__r0 < __m)						\
-	    __q0--, __r0 += (d);					\
-      }									\
-    __r0 -= __m;							\
-									\
-    (q) = (UWtype) __q1 * __ll_B | __q0;				\
-    (r) = __r0;								\
-  } while (0)
-
-#define udiv_qrnnd __udiv_qrnnd_c
-
-#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
-  do {									\
-    UWtype __x;								\
-    __x = (al) - (bl);							\
-    (sh) = (ah) - (bh) - (__x > (al));					\
-    (sl) = __x;								\
-  } while (0)
-
-#define umul_ppmm(w1, w0, u, v)						\
-  do {									\
-    UWtype __x0, __x1, __x2, __x3;					\
-    UHWtype __ul, __vl, __uh, __vh;					\
-									\
-    __ul = __ll_lowpart (u);						\
-    __uh = __ll_highpart (u);						\
-    __vl = __ll_lowpart (v);						\
-    __vh = __ll_highpart (v);						\
-									\
-    __x0 = (UWtype) __ul * __vl;					\
-    __x1 = (UWtype) __ul * __vh;					\
-    __x2 = (UWtype) __uh * __vl;					\
-    __x3 = (UWtype) __uh * __vh;					\
-									\
-    __x1 += __ll_highpart (__x0);/* this can't give carry */		\
-    __x1 += __x2;		/* but this indeed can */		\
-    if (__x1 < __x2)		/* did we get it? */			\
-      __x3 += __ll_B;		/* yes, add it in the proper pos.  */	\
-									\
-    (w1) = __x3 + __ll_highpart (__x1);					\
-    (w0) = __ll_lowpart (__x1) * __ll_B + __ll_lowpart (__x0);		\
-  } while (0)