Use system ruby (with asdf)

.zshrc

@@ -101,7 +101,7 @@ export GOPATH=${HOME}/.go
 export PATH=${GOPATH}/bin:$PATH
 
 ## Ruby
-export PATH=${PATH}:/home/leo/.gem/ruby/2.7.0/bin
+#export PATH=${PATH}:/home/leo/.gem/ruby/2.7.0/bin
 
 ## Elixir
 export ERL_AFLAGS="-kernel shell_history enabled"