Do not copy unneeded files to bundle /etc

Previously (Ardour3 buildstack) this was needed for fontconfing, gtk and
pango modules. these days we just compile --with-included-modules=yes.

tools/linux_packaging/build

@@ -342,12 +342,6 @@ else
 	echo "Skipping NLS support"
 fi
 
-#
-# Copy stuff that may be dynamically loaded
-#
-
-cp -R $GTKSTACK_ROOT/etc/* $Etc
-
 # We rely on clearlooks, so include a version from our own build tree
 # this one is special - we will set GTK_PATH to $Libraries/gtkengines