MDL-19611 removing some useless editor icons

lib/editor/tinymce/lib.php

@@ -119,7 +119,7 @@ protected function get_init_params($elementid, array $options=null) {
                     'theme_advanced_buttons1_add' => "|,undo,redo,|,search,replace,|,fullscreen",
                     'theme_advanced_buttons2' => "bold,italic,underline,strikethrough,sub,sup,|,justifyleft,justifycenter,justifyright,justifyfull,|,cite,abbr,acronym",
                     'theme_advanced_buttons2_add' => "|,selectall,cleanup,removeformat,pastetext,pasteword,|,forecolor,backcolor,|,ltr,rtl",
-                    'theme_advanced_buttons3' => "bullist,numlist,outdent,indent,|,link,unlink,moodlenolink,anchor,|,insertdate,inserttime,|,emotions,image,{$xmedia}{$xdragmath}advhr,nonbreaking,charmap",
+                    'theme_advanced_buttons3' => "bullist,numlist,outdent,indent,|,link,unlink,moodlenolink,anchor,|,emotions,image,{$xmedia}{$xdragmath}advhr,nonbreaking,charmap",
                     'theme_advanced_buttons3_add' => "|,table,insertlayer,styleprops,visualchars,|,code,preview",
                     'theme_advanced_fonts' => "Trebuchet=Trebuchet MS,Verdana,Arial,Helvetica,sans-serif;Arial=arial,helvetica,sans-serif;Courier New=courier new,courier,monospace;Georgia=georgia,times new roman,times,serif;Tahoma=tahoma,arial,helvetica,sans-serif;Times New Roman=times new roman,times,serif;Verdana=verdana,arial,helvetica,sans-serif;Impact=impact;Wingdings=wingdings",
                     'theme_advanced_resize_horizontal' => true,