Get rid of useless alias

Name function right in the first place, instead naming it wrong and
renaming it using alias.

dotfiles/bash/main.bashrc

     fi
 }
 
-clear_to_bottom() {
+clsz() {
     tput clear; tput cup $(tput lines) 0
 }
 
 # some more aliases
 alias cal='cal -m'
 alias cls='clear'
-alias clsz='clear_to_bottom'
 alias ll='ls -lh'
 alias lla='ls -lha'
 alias open='gnome-open'