[IA64] Removal of percpu TR cleanup in kexec code

The kexec code wasn't in the kernel when Ken Chen created
this patch (00b65985fb2fc542b855b03fcda0d0f2bab4f442) to
change the mapping of percpu area from a TR to a TC.

Zou Nanhai spotted this extra piece, and Simon Horman
concurred.

Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/kernel/relocate_kernel.S

@@ -94,7 +94,7 @@ GLOBAL_ENTRY(relocate_new_kernel)
 4:
         srlz.i
         ;;
-	//purge TR entry for kernel text and data
+	// purge TR entry for kernel text and data
         movl r16=KERNEL_START
         mov r18=KERNEL_TR_PAGE_SHIFT<<2
         ;;
@@ -104,15 +104,6 @@ GLOBAL_ENTRY(relocate_new_kernel)
         srlz.i
         ;;
 
-	// purge TR entry for percpu data
-        movl r16=PERCPU_ADDR
-        mov r18=PERCPU_PAGE_SHIFT<<2
-        ;;
-        ptr.d r16,r18
-        ;;
-        srlz.d
-	;;
-
         // purge TR entry for pal code
         mov r16=in3
         mov r18=IA64_GRANULE_SHIFT<<2