remove unused local string in IRForTarget.cpp

[ldrumm]

Summary

It looks like there's an unused variable in source/Plugins/Expression/Clang/IRForTarget.cpp std::string name is assigned the function name, then never used again.
;
There don't appear to be any side-effects from removing this.

[ldrumm]

rebased on current HEAD

[ADodds]

I'm happy to commit this for you.

lldb/trunk/source/Plugins/ExpressionParser/Clang/IRForTarget.cpp

 {
 }
 
 bool
 IRForTarget::FixFunctionLinkage(llvm::Function &llvm_function)
 {
     llvm_function.setLinkage(GlobalValue::ExternalLinkage);
 
-    std::string name = llvm_function.getName().str();
-
     return true;
 }
 
 clang::NamedDecl *
 IRForTarget::DeclForGlobal (const GlobalValue *global_val, Module *module)
 {
     NamedMDNode *named_metadata = module->getNamedMetadata("clang.global.decl.ptrs");