remove XXX notes concerning color overrides

www/calendar/app-calendar.less

@@ -74,23 +74,23 @@
                     color: @cp_calendar-now-fg !important;
                 }
                 .tui-full-calendar-weekday-schedule-time .tui-full-calendar-weekday-schedule-title {
-                    color: @cryptpad_text_col !important; // XXX
+                    color: @cryptpad_text_col !important;
                 }
                 .tui-full-calendar-extra-date {
                     .tui-full-calendar-weekday-grid-date {
-                        color: @cp_sidebar-hint !important; // XXX
+                        color: @cp_sidebar-hint !important;
                         opacity: 0.5;
                     }
                 }
                 .tui-full-calendar-weekday-grid-date {
-                    color: @cryptpad_text_col !important; // XXX
+                    color: @cryptpad_text_col !important;
                 }
                 .tui-full-calendar-month-dayname-item span {
-                    color: @cryptpad_text_col !important; // XXX
+                    color: @cryptpad_text_col !important;
                 }
             }
             .tui-full-calendar-dayname * {
-                color: @cryptpad_text_col !important; // XXX
+                color: @cryptpad_text_col !important;
             }
                 .tui-full-calendar-month-more {
                     background-color: @cp_sidebar-right-bg !important;