User Preferences
You can predefine, disable or remove several options on the user preferences page using the following parameters in your wiki config:
Variable  | 
  Default  | 
  Description  | 
user_checkbox_defaults  | 
  dict  | 
  Sets the default settings of the user preferences checkboxes. Example: user_checkbox_defaults = {'edit_on_doubleclick': 0}  | 
user_checkbox_disable  | 
  []  | 
  a list of checkbox names to be disabled in the user preferences. A disabled checkbox is displayed greyedout and uses the default value set in user_checkbox_defaults.  | 
user_checkbox_fields  | 
  [...]  | 
  list of checkbox items.  | 
user_checkbox_remove  | 
  []  | 
  a list of checkbox names to be removed from the user preferences. A removed checkbox uses the default value set in user_checkbox_defaults.  | 
user_form_defaults  | 
  []  | 
  a list of form defaults for user preferences.  | 
user_form_disable  | 
  []  | 
  a list of form field names to be disabled in the user preferences. A disabled field is displayed greyed out and uses the default value set in user_form_defaults.  | 
user_form_fields  | 
  [...]  | 
  list of user preferences form items.  | 
user_form_remove  | 
  []  | 
  a list of form field names to be removed from user preferences. A removed form field uses the default value set in user_form_defaults.  | 
The possible keys / clear text explanations are found in MoinMoin/config/multiconfig.py:
Variable  | 
  Description  | 
mailto_author  | 
  Publish my email (not my wiki homepage) in author info  | 
edit_on_doubleclick  | 
  Open editor on double click  | 
remember_last_visit  | 
  After login, jump to last visited page  | 
show_comments  | 
  Show comment sections  | 
show_nonexist_qm  | 
  Show question mark for non-existing pagelinks  | 
show_page_trail  | 
  Show page trail  | 
show_toolbar  | 
  Show icon toolbar  | 
show_topbottom  | 
  Show top/bottom links in headings  | 
show_fancy_diff  | 
  Show fancy diffs  | 
wikiname_add_spaces  | 
  Add spaces to displayed wiki names  | 
remember_me  | 
  Remember login information  | 
want_trivial  | 
  Subscribe to trivial changes  | 
disabled  | 
  Disable this account forever  | 
So you could do, for example:
user_checkbox_remove = ['edit_on_doubleclick', 'show_nonexist_qm', 'show_toolbar', 'show_topbottom', 'show_fancy_diff', 'wikiname_add_spaces', 'remember_me', 'disabled',]
user_form_remove = ['password', 'password2', 'css_url', 'logout', 'create', 'account_sendmail', 'aliasname',]