Stop linking all target libraries in llvm-nm and llvm-objdump.

llvm-nm only needs the target to parse module level assembly in bitcode.  It doesn't need a disassembler or codegen.

llvm-objdump needs to be able to disassemble a file, but doesn't need asm parsers or codegen.

This reduces the sizes of these tools by a few MB each, depending on how many backends are linked in.

llvm-svn: 249632

llvm/tools/llvm-objdump/llvm-objdump.cpp

@@ -1582,7 +1582,6 @@ int main(int argc, char **argv) {
   // Initialize targets and assembly printers/parsers.
   llvm::InitializeAllTargetInfos();
   llvm::InitializeAllTargetMCs();
-  llvm::InitializeAllAsmParsers();
   llvm::InitializeAllDisassemblers();
 
   // Register the target printer for --version.