Remove workaround from user.pp

The issue referenced in the workaround (https://tickets.puppetlabs.com/browse/PUP-9706) has been closed and puppetlabs/puppet#7527 was merged to address the underlying issue. Therefore this workaround should no longer be needed and the `managehome` option should be customizable.

Full issue description reported here #438

Author: CoreyCook8

manifests/user.pp

@@ -234,13 +234,8 @@
       ensure     => 'absent',
       forcelocal => $forcelocal,
       home       => $_home,
-      managehome => false,  # Workaround for PUP-9706; see below.
+      managehome => $managehome,
     }
-    # The core `user` resource will fail when removing users on Solaris if
-    # `ensure => 'absent', managhome => true` and the homedir does not exist.
-    # We therefore force `managehome => false` when `ensure => 'absent'`, and
-    # remove the homedir as a separate operation.
-    # See https://tickets.puppetlabs.com/browse/PUP-9706
     if $purge_user_home {
       file { $_home:
         ensure  => 'absent',