Revert "[NFC][ARM] Update test"

[ctetreau]

Summary

There exists no corresponding code change for this commit, and this
commit causes downstream breakages.

This reverts commit 2db5547c016dbbd6acac3f3175937324f0095226.

llvm/test/CodeGen/Thumb2/ldr-str-imm12.ll

 %union.anon = type { %struct.GAP }
 %union.rec = type { %struct.head_type }
 
 @zz_hold = external global %union.rec*            ; <%union.rec**> [#uses=2]
 @zz_res = external global %union.rec*             ; <%union.rec**> [#uses=1]
 
 define %union.rec* @Manifest(%union.rec* %x, %union.rec* %env, %struct.STYLE* %style, %union.rec** %bthr, %union.rec** %fthr, %union.rec** %target, %union.rec** %crs, i32 %ok, i32 %need_expand, %union.rec** %enclose, i32 %fcr) nounwind {
 entry:
-; CHECK: ldrd
-; CHECK-NEXT: movs    r5, #0
-; CHECK-NEXT: cmp     r5, #0
-; CHECK-NEXT: ldm.w
-; CHECK-NEXT: ldr{{(.w)?}} {{(r[0-9]+)|(lr)}}, [r7, #28]
-; CHECK-NEXT: ittt    ne
-; CHECK-NEXT: addne   sp, #292
-; CHECK-NEXT: popne.w {r8, r10, r11}
-; CHECK-NEXT: popne   {r4, r5, r6, r7, pc}
-; CHECK-NEXT: cmp.w   r0, #450
-; CHECK-NEXT: blt
-
+; CHECK:       ldr{{(.w)?}} {{(r[0-9]+)|(lr)}}, [r7, #28]
   %xgaps.i = alloca [32 x %union.rec*], align 4   ; <[32 x %union.rec*]*> [#uses=0]
   %ycomp.i = alloca [32 x %union.rec*], align 4   ; <[32 x %union.rec*]*> [#uses=0]
   br label %bb20
 
 bb20:                                             ; preds = %entry
   switch i32 undef, label %bb1287 [
     i32 110, label %bb119
     i32 120, label %bb119