usbmount: install configuration file unconditionally

As discussed, users should use a rootfs overlay or a post-build script
instead of a custom skeleton to override files installed by Buildroot,
so there is no point in having conditions when installing init scripts
or configuration files.

[Peter: fix indentation as noted by Yann]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/usbmount/usbmount.mk

@@ -20,9 +20,7 @@ define USBMOUNT_INSTALL_TARGET_CMDS
 		$(TARGET_DIR)/etc/usbmount/usbmount.d/00_remove_model_symlink
 
 	$(INSTALL) -m 0644 -D $(@D)/usbmount.rules $(TARGET_DIR)/lib/udev/rules.d/usbmount.rules
-	@if [ ! -f $(TARGET_DIR)/etc/usbmount/usbmount.conf ]; then \
-	        $(INSTALL) -m 0644 -D $(@D)/usbmount.conf $(TARGET_DIR)/etc/usbmount/usbmount.conf; \
-	fi
+	$(INSTALL) -m 0644 -D $(@D)/usbmount.conf $(TARGET_DIR)/etc/usbmount/usbmount.conf
 
 	mkdir -p $(addprefix $(TARGET_DIR)/media/usb,0 1 2 3 4 5 6 7)
 endef