Simplify update-translated-strings.sh

Languages/update-translated-strings.sh

@@ -6,8 +6,4 @@
 # files might get modified the next time you try to build using cmake.
 
 POTFILE=./Languages/po/dolphin-emu.pot
-PO_FILES=$(find ./Languages/po -name '*.po')
-for PO in $PO_FILES
-do
-	msgmerge --quiet --update --backup=none -s $PO $POTFILE
-done
+find ./Languages/po -name '*.po' -exec msgmerge --quiet --update --backup=none -s {} $POTFILE \;