qmldump: Allow qmldump to be also built in release mode

Don't force that qmldump is compiled in debug mode: This won't work
with a Qt compiled only in release mode.

If Qt is built with debug_and_release, qmldump will be build in release
mode.

Reviewed-by: ckamm

share/qtcreator/qml/qmldump/qmldump.pro

@@ -8,10 +8,6 @@ TARGET = qmldump
 QT += declarative
 CONFIG += console
 
-### FIXME: only debug plugins are now supported.
-CONFIG -= release
-CONFIG += debug
-
 TEMPLATE = app
 
 SOURCES += main.cpp