Fix unar error introduced in 30ccb87

I'd removed debianMajor and the like in the last commit, but I missed
one instance of it being used: To install the unar package on jessie and
greater systems.  Well, jessie is now oldstable and wheezy is so
obsolete you're not even recommended to upgrade from it.  Nowadays, we
should just be installing the package.

We ought to check for it in /usr/local and see if we can determine if
its an old version and remove it, probably.  If someone else would like
to tackle that, feel free.

setup/ivan.sh

@@ -1131,21 +1131,10 @@ if [[ $installArchiveTools ]]; then
 		echo "A2CLOUD: Installing The Unarchiver..."
 
 		# jessie and later: Just use the unar package
-		if [[ $debianMajor -ge 8 ]]; then
 		sudo apt-get -y install unar
 		sudo apt-get clean
-		fi
-
-		if ! hash unar 2> /dev/null; then
-			if [[ $downloadBinaries && "$(apt-cache search '^libgnustep-base1.22$')" ]]; then
-				# Dependencies: for unar
-				sudo apt-get -y install libgnustep-base1.22
-				sudo apt-get clean
-				wget -qO- "${a2cBinaryURL}/picopkg/unar-${ras2_os}_${ras2_arch}.tgz" | sudo tar Pzx &> /dev/null
-			fi
 
 		# If all else fails, compile from source.
-
 		if ! hash unar 2> /dev/null; then
 			# Dependencies: build-deps for unar
 			sudo apt-get -y install build-essential libgnustep-base-dev libz-dev libbz2-dev libssl-dev libicu-dev unzip
@@ -1170,7 +1159,6 @@ if [[ $installArchiveTools ]]; then
 			sudo mv lsar.1 unar.1 /usr/local/man/man1
 			cd
 			rm -rf /tmp/unar
-			fi
 			sudo mandb &> /dev/null
 		fi
 	else