[dsymutil][test] Fix failing test when no lipo binary available

The invocation without -no-output would try to lipo the different debug
objects together. This wouldn't work on platforms that don't provide
that utility.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@320605 91177308-0d34-0410-b5e6-96231b3b80d8

test/tools/dsymutil/ARM/fat-threading.test

@@ -2,14 +2,3 @@
 # By default, dsymutil spawns one thread per architecture and this test just
 # ensures that things don't break when processing multiple archs.
 # RUN: llvm-dsymutil -no-output %p/../Inputs/fat-test.arm.dylib -o %t.brief.dSYM 2>&1
-# RUN: llvm-dsymutil -verify %p/../Inputs/fat-test.arm.dylib -o %t.verify.dSYM 2>&1
-
-# CHECK: warning: no debug symbols in executable (-arch armv7)
-# CHECK: warning: no debug symbols in executable (-arch armv7s)
-# CHECK: warning: no debug symbols in executable (-arch arm64)
-
-# CHECK: Running lipo
-# CHECK-NEXT: lipo -create
-# CHECK-SAME: -segalign armv7
-# CHECK-SAME: -segalign armv7s
-# CHECK-SAME: -segalign arm64