Remove outdated init scripts

Remove several init scripts for operating systems that are no longer 
supported:
* `init.ubuntu` would only be useful on Ubuntu 14.04 LTS which has been 
in ESM for over a year
* `init.solaris` is for an operating system that hasn't been updated in 
>10 years
* `init.upstart` is for a startup method Ubuntu attempted but abandoned
* `init.fedora.centos.service` is for a version that hasn't recieved 
updates since 2017-05-10
* `init.freenas` is identical to `init.freebsd`
* `init-alt.freebsd` appears to attempt to use the web interface 
directly, and would break with authentication enabled

init-scripts/init.freebsd

@@ -60,7 +60,7 @@ verify_tautulli_pid() {
 
 # Try to stop Tautulli cleanly by sending SIGTERM
 tautulli_stop() {
-    echo "Stopping $name"
+    echo "Stopping $name."
     verify_tautulli_pid
     if [ -n "${pid}" ]; then
       kill ${pid}