QmlJS: Move 'file not found' error message from Bind to Link.

Change-Id: I701fc179f377581b87e31630eaa4231688152f5e
Reviewed-on: http://codereview.qt.nokia.com/2813
Reviewed-by: Leandro T. C. Melo <leandro.melo@nokia.com>

src/libs/qmljs/qmljsbind.cpp

@@ -278,8 +278,6 @@ bool Bind::visit(UiImport *ast)
         else if (importFileInfo.isDir())
             type = ImportInfo::DirectoryImport;
         else {
-            _diagnosticMessages->append(
-                        errorMessage(ast, tr("file or directory not found")));
             type = ImportInfo::UnknownFileImport;
         }
     }