Revert "Force gray-antialiasing for text."

Was already picked in 2.8 and the file it is changing is renamed in 2.8.

This reverts commit 83b0e3ce7650fca1a6388297f54627677eebe5d5

Change-Id: I2288241dc33fb713efaf8f182568bb1cd348f633
Reviewed-by: Marco Bubke <marco.bubke@digia.com>

share/qtcreator/qml/qmlpuppet/qml2puppet/main.cpp

@@ -47,10 +47,6 @@
 
 int main(int argc, char *argv[])
 {
-    // Since we always render text into an FBO, we need to globally disable
-    // subpixel antialiasing and instead use gray.
-    qputenv("QSG_DISTANCEFIELD_ANTIALIASING", "gray");
-
     QApplication application(argc, argv);
 
     QCoreApplication::setOrganizationName("QtProject");