The gold plugin doesn't need disassemblers.

Back in r128440 tools/LTO started exporting the disassembler interface. It
was never clear why, but whatever the reason I am pretty sure it doesn't hold
for tools/gold.

llvm-svn: 211325

llvm/tools/gold/gold-plugin.cpp

@@ -247,7 +247,6 @@ ld_plugin_status onload(ld_plugin_tv *tv) {
   InitializeAllTargetMCs();
   InitializeAllAsmParsers();
   InitializeAllAsmPrinters();
-  InitializeAllDisassemblers();
   CodeGen = new LTOCodeGenerator();
   if (MAttrs.size()) {
     std::string Attrs;