[REM] web: Remove toggle_button widget

This widget is not used anymore, as all the stat buttons have been removed
from the views.

addons/web/static/src/js/fields/basic_fields.js

@@ -2251,68 +2251,6 @@ var LabelSelection = AbstractField.extend({
     },
 });
 
-var FieldBooleanButton = AbstractField.extend({
-    className: 'o_stat_info',
-    supportedFieldTypes: ['boolean'],
-
-    //--------------------------------------------------------------------------
-    // Public
-    //--------------------------------------------------------------------------
-
-    /**
-     * A boolean field is always set since false is a valid value.
-     *
-     * @override
-     */
-    isSet: function () {
-        return true;
-    },
-
-    //--------------------------------------------------------------------------
-    // Private
-    //--------------------------------------------------------------------------
-
-    /**
-     * This widget is supposed to be used inside a stat button and, as such, is
-     * rendered the same way in edit and readonly mode.
-     *
-     * @override
-     * @private
-     */
-    _render: function () {
-        this.$el.empty();
-        var text, hover;
-        switch (this.nodeOptions.terminology) {
-            case "active":
-                text = this.value ? _t("Active") : _t("Inactive");
-                hover = this.value ? _t("Deactivate") : _t("Activate");
-                break;
-            case "archive":
-                text = this.value ? _t("Active") : _t("Archived");
-                hover = this.value ? _t("Archive") : _t("Restore");
-                break;
-            case "close":
-                text = this.value ? _t("Active") : _t("Closed");
-                hover = this.value ? _t("Close") : _t("Open");
-                break;
-            default:
-                var opt_terms = this.nodeOptions.terminology || {};
-                if (typeof opt_terms === 'string') {
-                    opt_terms = {}; //unsupported terminology
-                }
-                text = this.value ? _t(opt_terms.string_true) || _t("On")
-                                  : _t(opt_terms.string_false) || _t("Off");
-                hover = this.value ? _t(opt_terms.hover_true) || _t("Switch Off")
-                                   : _t(opt_terms.hover_false) || _t("Switch On");
-        }
-        var val_color = this.value ? 'text-success' : 'text-danger';
-        var hover_color = this.value ? 'text-danger' : 'text-success';
-        var $val = $('<span>').addClass('o_stat_text o_not_hover ' + val_color).text(text);
-        var $hover = $('<span>').addClass('o_stat_text o_hover ' + hover_color).text(hover);
-        this.$el.append($val).append($hover);
-    },
-});
-
 var BooleanToggle = FieldBoolean.extend({
     description: _lt("Toggle"),
     className: FieldBoolean.prototype.className + ' o_boolean_toggle',
@@ -3158,7 +3096,6 @@ return {
     AbstractFieldBinary: AbstractFieldBinary,
     FieldBinaryImage: FieldBinaryImage,
     FieldBoolean: FieldBoolean,
-    FieldBooleanButton: FieldBooleanButton,
     BooleanToggle: BooleanToggle,
     FieldChar: FieldChar,
     LinkButton: LinkButton,