remove unused assembler functions for arm

These assembler functions seem to be unused/referenced, so we can remove
them completely.

Signed-off-by: Florian La Roche <Florian.LaRoche@googlemail.com>

ldso/ldso/arm/thumb_atomics.S

@@ -1,78 +0,0 @@
-/* Copyright (C) 2006 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   In addition to the permissions in the GNU Lesser General Public
-   License, the Free Software Foundation gives you unlimited
-   permission to link the compiled version of this file with other
-   programs, and to distribute those programs without any restriction
-   coming from the use of this file. (The GNU Lesser General Public
-   License restrictions do apply in other respects; for example, they
-   cover modification of the file, and distribution when not linked
-   into another program.)
-
-   Note that people who make modified versions of this file are not
-   obligated to grant this special exception for their modified
-   versions; it is their choice whether to do so. The GNU Lesser
-   General Public License gives permission to release a modified
-   version without this exception; this exception also makes it
-   possible to release a modified version which carries forward this
-   exception.
-
-   The GNU C Library 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
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <features.h>
-
-#ifdef __UCLIBC_HAS_THREADS_NATIVE__
-
-#include <sysdep.h>
-
-#if defined __thumb__
-
-/* Out-of-line atomic operations that we can't do in Thumb mode.
-   This ends up in various libraries where it is needed (and
-   a few .a archives where it isn't).  */
-
-	.hidden __thumb_swpb
-ENTRY (__thumb_swpb)
-	swpb	r0, r0, [r1]
-	bx	lr
-END (__thumb_swpb)
-
-	.hidden __thumb_swp
-ENTRY (__thumb_swp)
-	swp	r0, r0, [r1]
-	bx	lr
-END (__thumb_swp)
-
-	.hidden __thumb_cmpxchg
-ENTRY (__thumb_cmpxchg)
-	stmdb	sp!, {r4, lr}
-	mov	r4, r0
-0:	ldr	r3, [r2]
-	cmp	r3, r4
-	bne	1f
-	mov	r0, r4
-	mov	r3, #0xffff0fff
-	mov	lr, pc
-	add	pc, r3, #(0xffff0fc0 - 0xffff0fff)
-	bcc	0b
-	mov	r3, r4
-1:	mov	r0, r3
-	ldmia	sp!, {r4, pc}
-END (__thumb_cmpxchg)
-
-#endif /* __thumb__ */
-#endif /* __UCLIBC_HAS_THREADS_NATIVE__ */
-