Remove redundant newline checking

--
RUN: at line 2: /home/dianqk/llvm/llvm-project/build/bin/llc -mtriple=x86_64-unknown-linux-gnu -stop-after=early-tailduplication -tail-dup-pred-size-limit=3 < /home/dianqk/llvm/llvm-project/llvm/test/CodeGen/X86/tail-dup-pred-size-limit.ll | /home/dianqk/llvm/llvm-project/build/bin/FileCheck /home/dianqk/llvm/llvm-project/llvm/test/CodeGen/X86/tail-dup-pred-size-limit.ll -check-prefix=LIMIT
+ /home/dianqk/llvm/llvm-project/build/bin/llc -mtriple=x86_64-unknown-linux-gnu -stop-after=early-tailduplication -tail-dup-pred-size-limit=3
+ /home/dianqk/llvm/llvm-project/build/bin/FileCheck /home/dianqk/llvm/llvm-project/llvm/test/CodeGen/X86/tail-dup-pred-size-limit.ll -check-prefix=LIMIT
/home/dianqk/llvm/llvm-project/llvm/test/CodeGen/X86/tail-dup-pred-size-limit.ll:48:16: error: LIMIT-NEXT: is not on the line after the previous match
 ; LIMIT-NEXT: bb.6 (%ir-block.16):
               ^
<stdin>:202:2: note: 'next' match was here
 bb.6 (%ir-block.16):
 ^
<stdin>:199:14: note: previous match ended here
 successors:
             ^
<stdin>:200:1: note: non-matching line after previous match is here

^

Input file: <stdin>
Check file: /home/dianqk/llvm/llvm-project/llvm/test/CodeGen/X86/tail-dup-pred-size-limit.ll

-dump-input=help explains the following input dump.

Input was:
<<<<<<
         .
         .
         .
       197:
       198:  bb.5.default.unreachable2:
       199:  successors:
       200:
       201:
       202:  bb.6 (%ir-block.16):
next:48      !~~~~~~~~~~~~~~~~~~~  error: match on wrong line
       203:  successors: %bb.7(0x20000000), %bb.8(0x20000000), %bb.9(0x20000000), %bb.10(0x20000000)
       204:
       205:  %4:gr32 = PHI %3, %bb.4, %2, %bb.3, %1, %bb.2, %0, %bb.1
       206:  %19:gr32 = SHR32ri %11, 2, implicit-def dead $eflags
       207:  %20:gr32 = AND32ri %19, 7, implicit-def dead $eflags
         .
         .
         .
>>>>>>

Author: dianqk

llvm/test/CodeGen/X86/tail-dup-pred-size-limit.mir

@@ -200,9 +200,7 @@ body:             |
   ; LIMIT-NEXT: {{  $}}
   ; LIMIT-NEXT: bb.6.default.unreachable2:
   ; LIMIT-NEXT:   successors:
-  ; LIMIT-NEXT: {{  $}}
-  ; LIMIT-NEXT: {{  $}}
-  ; LIMIT-NEXT: bb.7 (%ir-block.16):
+  ; LIMIT: bb.7 (%ir-block.16):
   ; LIMIT-NEXT:   successors: %bb.9(0x20000000), %bb.10(0x20000000), %bb.11(0x20000000), %bb.12(0x20000000)
   ; LIMIT-NEXT: {{  $}}
   ; LIMIT-NEXT:   [[PHI:%[0-9]+]]:gr32 = PHI [[SHR32ri3]], %bb.5, [[SHR32ri2]], %bb.4, [[SHR32ri1]], %bb.3, [[MOV32rm]], %bb.2
@@ -296,9 +294,7 @@ body:             |
   ; NOLIMIT-NEXT: {{  $}}
   ; NOLIMIT-NEXT: bb.6.default.unreachable2:
   ; NOLIMIT-NEXT:   successors:
-  ; NOLIMIT-NEXT: {{  $}}
-  ; NOLIMIT-NEXT: {{  $}}
-  ; NOLIMIT-NEXT: bb.9 (%ir-block.20):
+  ; NOLIMIT: bb.9 (%ir-block.20):
   ; NOLIMIT-NEXT:   successors: %bb.13(0x80000000)
   ; NOLIMIT-NEXT: {{  $}}
   ; NOLIMIT-NEXT:   [[PHI:%[0-9]+]]:gr32 = PHI [[MOV32rm]], %bb.2, [[SHR32ri2]], %bb.3, [[SHR32ri4]], %bb.4, [[SHR32ri6]], %bb.5