Revert "SDKtool: Warn if file is not found"

It is not an error. SDKTool can be used to create new files.

This reverts commit 274d3a8c79.

Change-Id: I4af46b4deb5fe356a9c1050cc9557d43f3a91a6e
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/tools/sdktool/operation.cpp

@@ -102,8 +102,6 @@ QVariantMap Operation::load(const QString &file)
         if (!reader.load(path))
             return QVariantMap();
         map = reader.restoreValues();
-    } else {
-        std::cerr << "File " << qPrintable(path.toUserOutput()) << " not found." << std::endl;
     }
 
     return map;