Remove obsolete 'find' path

The path './akonadi' has not existed for several years.

src/Messages.sh

 #! /bin/sh
 $EXTRACTRC `find . -name "*.rc" -o -name "*.ui" -o -name "*.kcfg"` >> rc.cpp || exit 11
-$XGETTEXT `find . \( ! -path "./akonadi/*" \) -a \( -name "*.cpp" -o -name "*.h" \)` -o $podir/kalarm.pot
+$XGETTEXT `find . -name "*.cpp" -o -name "*.h"` -o $podir/kalarm.pot