Remove kill_after_multiple_restarts column from apps table

[#88352892]

app/models/runtime/app.rb

@@ -72,7 +72,6 @@ def after_initialize
     # Last staging response which will contain streaming log url
     attr_accessor :last_stager_response
 
-    alias_method :kill_after_multiple_restarts?, :kill_after_multiple_restarts
     alias_method :diego?, :diego
 
     def copy_buildpack_errors

db/migrations/20150220010146_remove_kill_after_multiple_restarts_from_apps.rb

@@ -0,0 +1,13 @@
+Sequel.migration do
+  up do
+    alter_table :apps do
+      drop_column :kill_after_multiple_restarts
+    end
+  end
+
+  down do
+    alter_table :apps do
+      add_column :kill_after_multiple_restarts, :boolean, default: false
+    end
+  end
+end

spec/unit/models/runtime/app_spec.rb

@@ -1342,19 +1342,6 @@ def self.it_does_not_mark_for_re_staging
       end
     end
 
-    describe 'kill_after_multiple_restarts?' do
-      let(:app) { AppFactory.make }
-
-      it 'defaults to false' do
-        expect(app.kill_after_multiple_restarts?).to eq false
-      end
-
-      it 'can be set to true' do
-        app.kill_after_multiple_restarts = true
-        expect(app.kill_after_multiple_restarts?).to eq true
-      end
-    end
-
     describe 'version' do
       let(:app) { AppFactory.make(package_hash: 'abc', package_state: 'STAGED') }