make ide.scratch.enabled always true and remove it

platform/lang-impl/src/com/intellij/ide/scratch/ScratchFileActions.java

@@ -78,9 +78,8 @@ public class ScratchFileActions {
       getTemplatePresentation().setText(myActionText);
 
       String place = e.getPlace();
-      boolean enabled = e.getProject() != null
-                        && Registry.is("ide.scratch.enabled")
-                        && (ActionPlaces.isMainMenuOrActionSearch(place) || ActionPlaces.isPopupPlace(place));
+      boolean enabled = e.getProject() != null &&
+                        (ActionPlaces.isMainMenuOrActionSearch(place) || ActionPlaces.isPopupPlace(place));
       Presentation presentation = e.getPresentation();
       presentation.setEnabledAndVisible(enabled);
 
@@ -145,7 +144,7 @@ public class ScratchFileActions {
 
     @Override
     public void update(@NotNull AnActionEvent e) {
-      boolean enabled = e.getProject() != null && Registry.is("ide.scratch.enabled") && Registry.intValue("ide.scratch.buffers") > 0;
+      boolean enabled = e.getProject() != null && Registry.intValue("ide.scratch.buffers") > 0;
       e.getPresentation().setEnabledAndVisible(enabled);
     }
 

platform/util/resources/misc/registry.properties

@@ -753,8 +753,6 @@ embed.scene.builder.description=Show SceneBuilder embedded into IntelliJ IDEA fr
 new.retina.detection=false
 new.retina.detection.description=New implementation to detect retina devices
 
-ide.scratch.enabled=true
-ide.scratch.enabled.description=Disables scratch files and buffers
 ide.scratch.buffers=5
 ide.scratch.buffers.description=Number of scratch buffer files
 ide.scratch.in.project.view=false

python/ide/src/com/jetbrains/python/PyCharmInitialConfigurator.java

@@ -91,7 +91,6 @@ public class PyCharmInitialConfigurator {
       });
     }
 
-    Registry.get("ide.scratch.enabled").setValue(true);
     Registry.get("ide.ssh.one.time.password").setValue(true);
   }