Remove default button on kwinrules KCM

Summary:
The "default" button was behaving the same as "reset" which was unnecessary and confusing.

As the only settings are the list of rules, the only meaning "default" could have is to clear all the rules, which is probably not what the user would want. So I think the best course of action is to remove the button.

Reviewers: zzag, meven, crossi, bport, ervin

Reviewed By: zzag

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D28071

kcmkwin/kwinrules/kcm.cpp

@@ -51,6 +51,7 @@ KCMRules::KCMRules(QWidget *parent, const QVariantList &)
                                        QString(), QString(), KAboutLicense::GPL, i18n("(c) 2004 KWin and KControl Authors"));
     about->addAuthor(i18n("Lubos Lunak"), QString(), "l.lunak@kde.org");
     setAboutData(about);
+    setButtons(KCModule::Help | KCModule::Apply);
 }
 
 void KCMRules::load()
@@ -70,11 +71,6 @@ void KCMRules::save()
 
 }
 
-void KCMRules::defaults()
-{
-    widget->defaults();
-}
-
 QString KCMRules::quickHelp() const
 {
     return i18n("<p><h1>Window-specific Settings</h1> Here you can customize window settings specifically only"

kcmkwin/kwinrules/kcm.h

@@ -38,7 +38,6 @@ public:
     KCMRules(QWidget *parent, const QVariantList &args);
     void load() override;
     void save() override;
-    void defaults() override;
     QString quickHelp() const override;
 protected Q_SLOTS:
     void moduleChanged(bool state);

kcmkwin/kwinrules/ruleslist.cpp

@@ -229,10 +229,5 @@ void KCMRulesList::save()
     m_settings.save();
 }
 
-void KCMRulesList::defaults()
-{
-    load();
-}
-
 } // namespace
 

kcmkwin/kwinrules/ruleslist.h

@@ -36,7 +36,6 @@ public:
     ~KCMRulesList() override;
     void load();
     void save();
-    void defaults();
 Q_SIGNALS:
     void changed(bool);
 private Q_SLOTS: