Remove unused argument.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81010 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Driver/ToolChains.cpp

@@ -120,7 +120,7 @@ Tool &Darwin_X86::SelectTool(const Compilation &C,
     case Action::AssembleJobClass:
       T = new tools::darwin::Assemble(*this); break;
     case Action::LinkJobClass:
-      T = new tools::darwin::Link(*this, MacosxVersionMin.c_str()); break;
+      T = new tools::darwin::Link(*this); break;
     case Action::LipoJobClass:
       T = new tools::darwin::Lipo(*this); break;
     }

lib/Driver/Tools.h

@@ -201,15 +201,11 @@ namespace darwin {
     void AddDarwinSubArch(const ArgList &Args, ArgStringList &CmdArgs) const;
     void AddLinkArgs(const ArgList &Args, ArgStringList &CmdArgs) const;
 
-    /// The default macosx-version-min.
-    const char *MacosxVersionMin;
-
     const toolchains::Darwin_X86 &getDarwinToolChain() const;
 
   public:
-    Link(const ToolChain &TC,
-         const char *_MacosxVersionMin) 
-      : Tool("darwin::Link", TC), MacosxVersionMin(_MacosxVersionMin) {
+    Link(const ToolChain &TC)
+      : Tool("darwin::Link", TC) {
     }
 
     virtual bool acceptsPipedInput() const { return false; }