Revert r370661 "[llvm-nm] - Add a test case for case when we dump a symbol that belon...

Revert r370661 "[llvm-nm] - Add a test case for case when we dump a symbol that belongs to a section with a broken sh_name"

It broke BB:
http://lab.llvm.org:8011/builders/clang-x86_64-debian-fast/builds/16955/steps/test/logs/stdio

Expected<T> must be checked before access or destruction.
Unchecked Expected<T> contained error:
a section [index 1] has an invalid sh_name (0xffff) offset which goes past the end of the section name string tableStack dump:
0.	Program arguments: /srv/llvm-buildbot-srcatch/llvm-build-dir/clang-x86_64-debian-fast/llvm.obj/bin/llvm-nm /srv/llvm-buildbot-srcatch/llvm-build-dir/clang-x86_64-debian-fast/llvm.obj/test/tools/llvm-nm/Output/format-sysv-section.test.tmp2.o --format=sysv
 #0 0x00000000008af7c4 PrintStackTraceSignalHandler(void*) (/srv/llvm-buildbot-srcatch/llvm-build-dir/clang-x86_64-debian-fast/llvm.obj/bin/llvm-nm+0x8af7c4)
 #1 0x00000000008ad8be llvm::sys::RunSignalHandlers() (/srv/llvm-buildbot-srcatch/llvm-build-dir/clang-x86_64-debian-fast/llvm.obj/bin/llvm-nm+0x8ad8be)
 #2 0x00000000008afbd8 SignalHandler(int) (/srv/llvm-buildbot-srcatch/llvm-build-dir/clang-x86_64-debian-fast/llvm.obj/bin/llvm-nm+0x8afbd8)
 #3 0x00007f0a6b989730 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x12730)
 #4 0x00007f0a6b48d7bb raise (/lib/x86_64-linux-gnu/libc.so.6+0x377bb)
 #5 0x00007f0a6b478535 abort (/lib/x86_64-linux-gnu/libc.so.6+0x22535)
 #6 0x000000000042004b llvm::Expected<llvm::StringRef>::fatalUncheckedExpected() const (/srv/llvm-buildbot-srcatch/llvm-build-dir/clang-x86_64-debian-fast/llvm.obj/bin/llvm-nm+0x42004b)
 #7 0x00000000008367f5 (/sv/llvm-buildbot-srcatch/llvm-build-dir/clang-x86_64-debian-fast/llvm.obj/bin/llvm-nm+0x8367f5)
 #8 0x0000000000817b80 llvm::object::IRObjectFile::findBitcodeInObject(llvm::object::ObjectFile const&) (/srv/llvm-buildbot-srcatch/llvm-build-dir/clang-x86_64-debian-fast/llvm.obj/bin/llvm-nm+0x817b80)
 #9 0x0000000000838416 llvm::object::SymbolicFile::createSymbolicFile(llvm::MemoryBufferRef, llvm::file_magic, llvm::LLVMContext*) (/srv/llvm-buildbot-srcatch/llvm-build-dir/clang-x86_64-debian-fast/llvm.obj/bin/llvm-nm+0x838416)
#10 0x00000000007f36cb llvm::object::createBinary(llvm::MemoryBufferRef, llvm::LLVMContext*) (/srv/llvm-buildbot-srcatch/llvm-build-dir/clang-x86_64-debian-fast/llvm.obj/bin/llvm-nm+0x7f36cb)
#11 0x0000000000413123 dumpSymbolNamesFromFile(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&) (/srv/llvm-buildbot-srcatch/llvm-build-dir/clang-x86_64-debian-fast/llvm.obj/bin/llvm-nm+0x413123)
#12 0x0000000000412e38 main (/srv/llvm-buildbot-srcatch/llvm-build-dir/clang-x86_64-debian-fast/llvm.obj/bin/llvm-nm+0x412e38)
#13 0x00007f0a6b47a09b __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2409b)
#14 0x00000000004120da _start (/srv/llvm-buildbot-srcatch/llvm-build-dir/clang-x86_64-debian-fast/llvm.obj/bin/llvm-nm+0x4120da)
FileCheck error: '-' is empty.
FileCheck command line:  /srv/llvm-buildbot-srcatch/llvm-build-dir/clang-x86_64-debian-fast/llvm.obj/bin/FileCheck /srv/llvm-buildbot-srcatch/llvm-build-dir/clang-x86_64-debian-fast/llvm.src/test/tools/llvm-nm/format-sysv-section.test --check-prefix=ERR

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@370662 91177308-0d34-0410-b5e6-96231b3b80d8