Don't get in the user's way if cowsay isn't installed

Signed-off-by: Thomas A. Christensen II <25492070+MillironX@users.noreply.github.com>

cowsay-cows.plugin.zsh

@@ -1,5 +1,3 @@
-# Only add stuff if cowsay is installed
-if [ $(command -v cowsay) ]; then
 # Add default install cows to COWPATH
 # Search for cows in $PREFIX/share/cows. According to the original repo
 # (https://github.com/tnalpgge/rank-amateur-cowsay), this is the place to find
@@ -21,7 +19,3 @@ if [ $(command -v cowsay) ]; then
 alias bullsay="cowsay -f bull"
 alias steersay="cowsay -f longhorn"
 alias tuxsay="cowsay -f tux"
-else
-  # Direct the user to install cowsay
-  alias cowsay="echo \"cowsay needs to be installed via apt, dnf, or the like\""
-fi