Remove obsolete patch

debian/abi/powerpc-avoid-abi-change-for-disabling-tm.patch let us postpone an
ABI bump. But with the 4.19.81 upstream release, we can no longer avoid it.

debian/patches/debian/abi/powerpc-avoid-abi-change-for-disabling-tm.patch

@@ -1,38 +0,0 @@
-From: Ben Hutchings <ben@decadent.org.uk>
-Date: Thu, 22 Aug 2019 19:26:31 +0100
-Subject: powerpc: Avoid ABI change for disabling TM
-Forwarded: not-needed
-
-Keep the TM state in struct paca_struct and struct thread_struct even
-though we won't be using it any more.
-
-The KVM state structures will change, but we ignore ABI changes there
-since they won't affect out-of-tree modules.
-
----
-Index: linux/arch/powerpc/include/asm/paca.h
-===================================================================
---- linux.orig/arch/powerpc/include/asm/paca.h
-+++ linux/arch/powerpc/include/asm/paca.h
-@@ -173,7 +173,7 @@ struct paca_struct {
- 	u8 pmcregs_in_use;		/* pseries puts this in lppaca */
- #endif
- 	u64 sprg_vdso;			/* Saved user-visible sprg */
--#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
-+#if 1 /* ifdef CONFIG_PPC_TRANSACTIONAL_MEM */
- 	u64 tm_scratch;                 /* TM scratch area for reclaim */
- #endif
- 
-Index: linux/arch/powerpc/include/asm/processor.h
-===================================================================
---- linux.orig/arch/powerpc/include/asm/processor.h
-+++ linux/arch/powerpc/include/asm/processor.h
-@@ -293,7 +293,7 @@ struct thread_struct {
- 					   call or trap return */
- 	int		used_spe;	/* set if process has used spe */
- #endif /* CONFIG_SPE */
--#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
-+#if 1 /* ifdef CONFIG_PPC_TRANSACTIONAL_MEM */
- 	u8	load_tm;
- 	u64		tm_tfhar;	/* Transaction fail handler addr */
- 	u64		tm_texasr;	/* Transaction exception & summary */

debian/patches/series

@@ -331,4 +331,3 @@ bugfix/x86/i915/0012-drm-i915-gen8-Add-RC6-CTX-corruption-WA.patch
 bugfix/x86/i915/drm-i915-cmdparser-fix-jump-whitelist-clearing.patch
 
 # ABI maintenance
-debian/abi/powerpc-avoid-abi-change-for-disabling-tm.patch