MDL-21695 Choice module now uses new help strings

AMOS BEGIN
 HLP choice/limit.html,[limitanswers_help,mod_choice]
 HLP choice/options.html,[choiceoptions_help,mod_choice]
 HLP choice/timerestrict.html,[timerestrict_help,mod_choice]
AMOS END

lang/en/help/choice/limit.html

@@ -1,11 +0,0 @@
-<h1>Choice Limit</h1>
-
-<p>This option allows you to limit the number of participants 
-   that can select each particular option.</p>
-
-<p>Once Limits have been enabled, each option can set a limit.  
-   When the limit is reached then no-one else can select that option.  
-   A limit of zero (0) means that no-one can select that choice.</p>
-
-<p>If Limits are disabled then any number of participants can 
-   select any of the options.</p>

lang/en/help/choice/mods.html

@@ -1,7 +0,0 @@
-<p><img alt="" src="<?php echo $CFG->wwwroot?>/mod/choice/icon.gif" />&nbsp;<b>Choices</b></p>
-<div class="indent">
-A choice activity is very simple - the teacher asks a question and specifies a 
-choice of multiple responses.  It can be useful as a quick poll to 
-stimulate thinking about a topic; to allow the class to vote on 
-a direction for the course; or to gather research consent.
-</div>

lang/en/help/choice/options.html

@@ -1,6 +0,0 @@
-<h1>Choice options</h1>
-
-<p>Here is where you specify the options that participants 
-   have to choose from.</p>
-
-<p>You can fill in any number of these: it's OK to leave some blank.</p>

lang/en/help/choice/timerestrict.html

@@ -1,8 +0,0 @@
-<h1>Restrict times</h1>
-
-<p>This setting allows you to define a time window within which 
-   participants are allowed to make a choice.</p>
-
-<p>To set an open-ended close date just set the time very far in the future.</p>
-
-<p>If you don't need this at all then uncheck the box.</p>