cmFLTKWrapUI: Remove CMake 2.2 compat code.

CMake 3.0 dropped CMake <= 2.4 compatibility.

Source/cmFLTKWrapUICommand.cxx

@@ -129,45 +129,6 @@ void cmFLTKWrapUICommand::FinalPass()
     cmSystemTools::Message(msg.c_str(),"Warning");
     return;
     }
-  std::vector<cmSourceFile*> srcs;
-  target->GetSourceFiles(srcs, "");
-  bool found = false;
-  for (unsigned int i = 0; i < srcs.size(); ++i)
-    {
-    if (srcs[i]->GetFullPath() ==
-        this->GeneratedSourcesClasses[0]->GetFullPath())
-      {
-      found = true;
-      break;
-      }
-    }
-  if (!found)
-    {
-    std::string msg =
-      "In CMake 2.2 the FLTK_WRAP_UI command sets a variable to the list of "
-      "source files that should be added to your executable or library. It "
-      "appears that you have not added these source files to your target. "
-      "You should change your CMakeLists.txt file to "
-      "directly add the generated files to the target. "
-      "For example FTLK_WRAP_UI(foo src1 src2 src3) "
-      "will create a variable named foo_FLTK_UI_SRCS that contains the list "
-      "of sources to add to your target when you call ADD_LIBRARY or "
-      "ADD_EXECUTABLE. For now CMake will add the sources to your target "
-      "for you as was done in CMake 2.0 and earlier. In the future this may "
-      "become an error.";
-    msg +="The problem was found while processing the source directory: ";
-    msg += this->Makefile->GetCurrentSourceDirectory();
-    cmSystemTools::Message(msg.c_str(),"Warning");
-    // first we add the rules for all the .fl to .h and .cxx files
-    size_t lastHeadersClass = this->GeneratedSourcesClasses.size();
-
-    // Generate code for all the .fl files
-    for(size_t classNum = 0; classNum < lastHeadersClass; classNum++)
-      {
-      this->Makefile->GetTargets()[this->Target]
-        .AddSource(this->GeneratedSourcesClasses[classNum]->GetFullPath());
-      }
-    }
 }