cmTarget: Simplify ClearDependencyInformation signature

We don't need to pass an argument with the target's own name.

Source/cmMakefile.cxx

@@ -1867,7 +1867,7 @@ cmTarget* cmMakefile::AddLibrary(const std::string& lname,
   // Clear its dependencies. Otherwise, dependencies might persist
   // over changes in CMakeLists.txt, making the information stale and
   // hence useless.
-  target->ClearDependencyInformation(*this, lname);
+  target->ClearDependencyInformation(*this);
   if (excludeFromAll) {
     target->SetProperty("EXCLUDE_FROM_ALL", "TRUE");
   }

Source/cmTarget.cxx

@@ -635,12 +635,11 @@ const std::vector<std::string>& cmTarget::GetLinkDirectories() const
   return this->LinkDirectories;
 }
 
-void cmTarget::ClearDependencyInformation(cmMakefile& mf,
-                                          const std::string& target)
+void cmTarget::ClearDependencyInformation(cmMakefile& mf)
 {
   // Clear the dependencies. The cache variable must exist iff we are
   // recording dependency information for this target.
-  std::string depname = target;
+  std::string depname = this->GetName();
   depname += "_LIB_DEPENDS";
   if (this->RecordDependencies) {
     mf.AddCacheDefinition(depname, "", "Dependencies for target",
@@ -648,7 +647,7 @@ void cmTarget::ClearDependencyInformation(cmMakefile& mf,
   } else {
     if (mf.GetDefinition(depname)) {
       std::string message = "Target ";
-      message += target;
+      message += this->GetName();
       message += " has dependency information when it shouldn't.\n";
       message += "Your cache is probably stale. Please remove the entry\n  ";
       message += depname;

Source/cmTarget.h

@@ -137,7 +137,7 @@ public:
   /**
    * Clear the dependency information recorded for this target, if any.
    */
-  void ClearDependencyInformation(cmMakefile& mf, const std::string& target);
+  void ClearDependencyInformation(cmMakefile& mf);
 
   void AddLinkLibrary(cmMakefile& mf, const std::string& lib,
                       cmTargetLinkLibraryType llt);