package/amd-catalyst: fix circular Config.in dependency

package/amd-catalyst: fix circular Config.in dependency

The current amd-catalyst options related to the CCCLE tool create the
following Config.in circular dependency:

package/qt/Config.in:134:error: recursive dependency detected!
package/qt/Config.in:134:	symbol BR2_PACKAGE_QT_GUI_MODULE is selected by BR2_PACKAGE_AMD_CATALYST_CCCLE
package/amd-catalyst/Config.in:52:	symbol BR2_PACKAGE_AMD_CATALYST_CCCLE depends on BR2_PACKAGE_QT_NOPNG
package/qt/Config.in:277:	symbol BR2_PACKAGE_QT_NOPNG is part of choice <choice>
package/qt/Config.in:271:	choice <choice> contains symbol <choice>
package/qt/Config.in:271:	choice <choice> contains symbol BR2_PACKAGE_QT_GUI_MODULE

But in fact, it turns out that selecting BR2_PACKAGE_QT_GUI_MODULE is
not necessary, since we already "depends on BR2_PACKAGE_QT_X11", which
itself selects BR2_PACKAGE_QT_GUI_MODULE. Therefore, to fix this problem
we simply remove the "select BR2_PACKAGE_QT_GUI_MODULE" from the
BR2_PACKAGE_AMD_CATALYST_CCCLE option.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>