move pyenv-sh-{push,pop} into plugins since they aren't from rbenv

pirms 13 gadiem · 1b7d3b0502
--- a/plugins/pyenv-version-ext/bin/pyenv-sh-pop
+++ b/plugins/pyenv-version-ext/bin/pyenv-sh-pop
--- a/plugins/pyenv-version-ext/bin/pyenv-sh-push
+++ b/plugins/pyenv-version-ext/bin/pyenv-sh-push