git_update.sh:remove 2 repos from being pulled [skip ci]

Only the 2 remaining repos are needed to try the game if you're not
using a fork

https://github.com/ZetaGlest/zetaglest-source#try-the-game-without-contributing

git_update.sh

@@ -1,21 +1,13 @@
 #!/bin/bash
 export LANG=C
 
-cd "$(dirname $(readlink -f $0))"
+cd "$(dirname $(readlink -f $0))" &&
+
+echo $PWD &&
 
 git pull &&
 
 cd data &&
 git pull &&
 
-cd .. &&
-
-cd source/masterserver &&
-git pull &&
-
-cd ../.. &&
-
-cd mk/linux/tools-for-standalone-client/installer/mojosetup
-git pull &&
-
 exit 0