Profiler: Remove the old process selection widget

Author: https://github.com/gunnarbeutner
Commit: 7b9cabb5a3
Pull-request: https://github.com/SerenityOS/serenity/pull/6913

Userland/DevTools/Profiler/main.cpp

@@ -5,7 +5,6 @@
  */
 
 #include "IndividualSampleModel.h"
-#include "ProcessPickerWidget.h"
 #include "Profile.h"
 #include "TimelineContainer.h"
 #include "TimelineHeader.h"
@@ -112,8 +111,6 @@ int main(int argc, char** argv)
 
     [[maybe_unused]] auto& timeline_container = main_widget.add<TimelineContainer>(*timeline_header_container, *timeline_view);
 
-    main_widget.add<ProcessPickerWidget>(*profile);
-
     auto& tab_widget = main_widget.add<GUI::TabWidget>();
 
     auto& tree_tab = tab_widget.add_tab<GUI::Widget>("Call Tree");