Revert "Prepare for development on PEX 2.0"
Revert "Prepare for development on PEX 2.0"

This reverts commit 7b69bb28743326d52588d72d4d03fde9d12769f3.

Phoenix616/PermissionsEx,Phoenix616/PermissionsEx,PEXPlugins/PermissionsEx,xaoseric/PermissionsEx,PEXPlugins/PermissionsEx,PEXPlugins/PermissionsEx,xaoseric/PermissionsEx