Web Inspector: Remove SidebarPanel show/hide and added/removed

Web Inspector: Remove SidebarPanel show/hide and added/removed
https://bugs.webkit.org/show_bug.cgi?id=177387

Reviewed by Devin Rousso.

* UserInterface/Views/DebuggerTabContentView.js:
(WI.DebuggerTabContentView.prototype.showDetailsSidebarPanels):
* UserInterface/Views/SearchSidebarPanel.js:
(WI.SearchSidebarPanel.prototype.focusSearchField):
* UserInterface/Views/Sidebar.js:
(WI.Sidebar.prototype.insertSidebarPanel):
(WI.Sidebar.prototype.removeSidebarPanel):
* UserInterface/Views/SidebarPanel.js:
(WI.SidebarPanel.prototype.show): Deleted.
(WI.SidebarPanel.prototype.hide): Deleted.
(WI.SidebarPanel.prototype.added): Deleted.
(WI.SidebarPanel.prototype.removed): Deleted.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@222420 268f45cc-cd09-0410-ab3c-d52691b4dbfc