Fix cls alias when in tmux on iTerm2

zshrc

@@ -187,14 +187,10 @@ which cmake &> /dev/null && \
 which ssh &> /dev/null && \
   alias ssh='TERM=xterm-256color ssh'
 alias weather="curl wttr.in"
+alias cls="clear && printf '\e[3J'"
 
 case `uname` in
   Linux)
-    if [ "$TMUX" = "" ] || [ -d /mnt/c ]; then
-      alias cls="clear && printf '\e[3J'"
-    else
-      alias cls="printf '\ec'"
-    fi
     alias ls='ls -F --color=auto'
     if which cgdb &> /dev/null; then
       alias debug='cgdb --args'
@@ -203,7 +199,6 @@ case `uname` in
     fi
     ;;
   Darwin)
-    alias cls="clear && printf '\e[3J'"
     alias ls='ls -GFh'
     which lldb &> /dev/null && \
       alias debug='lldb --'