bashrc: remove useless alias

Signed-off-by: Frank Villaro-Dixon <frank@villaro-dixon.eu>

files/bashrc

@@ -16,7 +16,6 @@ set -o vi
 
 alias k='kubectl'
 alias klks='kubectl -n kube-system'
-alias change_yubikey='gpg-connect-agent "scd serialno" "learn --force" /bye'
 alias dockre='docker'
 alias dokcer='docker'
 alias ..='cd ..'
@@ -27,10 +26,6 @@ alias cp='cp -i'
 alias mv='mv -i'
 alias vm='mv -i'
 
-alias df='dfc'
-alias free='freec'
-alias shred='shred -n 35 -z -u -v -f'
-
 if [ "$TERM" != "dumb" ]; then
     eval "`dircolors -b`"
     alias ls='ls --color=auto -N'