Revert "Lazy load our shim loaders"

This reverts commit 982439c2b2.

functions

@@ -55,20 +55,3 @@ function run {
 function npm-exec {
   (PATH=$(npm bin):$PATH; eval $@;)
 }
-
-# lazy loading
-function rbenv {
-  eval "$(command rbenv init -)"
-  rbenv "$@"
-}
-
-function nodeenv {
-  eval "$(command nodenv init -)"
-  nodenv "$@"
-}
-
-function pyenv {
-  eval "$(command pyenv init -)"
-  eval "$(command pyenv virtualenv-init -)"
-  pyenv "$@"
-}