Remove some packages

create_vm.sh

@@ -20,7 +20,7 @@ PACKAGES=(# Core packages
           sfml
           # Nice-to-haves
           bash-completion
-          zsh
+          #zsh # if they want zsh, they can install it themselves
           htop
           # VCS
           subversion
@@ -42,7 +42,7 @@ PACKAGES=(# Core packages
           python2-matplotlib # for lab_btree
           # Browsers
           chromium
-          firefox
+          #firefox # removed due to size (+ dependencies)
           # Development (compilers, interpreters, debuggers, etc.)
           clang35
           llvm35