[package] fix various init scripts

Changes include:

* removing unused variables
* replacing spaces with tabs where appropriate
* more consistency with variable declarations

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38142 3c298f89-4303-0410-b956-a3cf2f4a3e73