[FIX] web_ir_actions_act_window_message: remove incorrect documentation

Author: hbrunn

web_ir_actions_act_window_message/README.rst

@@ -49,8 +49,6 @@ Depend on this module and return
        'message': _('My message'),
        # optional title of the close button, if not set, will be _('Close')
        # if set False, no close button will be shown
-       # you can create your own close button with an action of type
-       # ir.actions.act_window_close
        'close_button_title': 'Make this window go away',
        # Use HTML instead of text
        'is_html_message': True,

web_ir_actions_act_window_message/readme/USAGE.md

@@ -7,8 +7,6 @@ Depend on this module and return
     'message': _('My message'),
     # optional title of the close button, if not set, will be _('Close')
     # if set False, no close button will be shown
-    # you can create your own close button with an action of type
-    # ir.actions.act_window_close
     'close_button_title': 'Make this window go away',
     # Use HTML instead of text
     'is_html_message': True,

web_ir_actions_act_window_message/static/description/index.html

@@ -396,8 +396,6 @@ <h1><a class="toc-backref" href="#toc-entry-1">Usage</a></h1>
 </span>    <span class="s1">'message'</span><span class="p">:</span> <span class="n">_</span><span class="p">(</span><span class="s1">'My message'</span><span class="p">),</span><span class="w">
 </span>    <span class="c1"># optional title of the close button, if not set, will be _('Close')</span><span class="w">
 </span>    <span class="c1"># if set False, no close button will be shown</span><span class="w">
-</span>    <span class="c1"># you can create your own close button with an action of type</span><span class="w">
-</span>    <span class="c1"># ir.actions.act_window_close</span><span class="w">
 </span>    <span class="s1">'close_button_title'</span><span class="p">:</span> <span class="s1">'Make this window go away'</span><span class="p">,</span><span class="w">
 </span>    <span class="c1"># Use HTML instead of text</span><span class="w">
 </span>    <span class="s1">'is_html_message'</span><span class="p">:</span> <span class="kc">True</span><span class="p">,</span><span class="w">