chore: move mixpanel tests to component test suite

test/integrations/destinations/mp/common.ts

@@ -0,0 +1,23 @@
+const defaultMockFns = () => {
+  jest.spyOn(Date, 'now').mockImplementation(() => new Date(Date.UTC(2020, 0, 25)).valueOf());
+};
+
+const sampleDestination = {
+  Config: {
+    apiKey: 'dummyApiKey',
+    token: 'dummyApiKey',
+    prefixProperties: true,
+    useNativeSDK: false,
+  },
+  DestinationDefinition: {
+    DisplayName: 'Mixpanel',
+    ID: '1WhbSZ6uA3H5ChVifHpfL2H6sie',
+    Name: 'MP',
+  },
+  Enabled: true,
+  ID: '1WhcOCGgj9asZu850HvugU2C3Aq',
+  Name: 'MP',
+  Transformations: [],
+};
+
+export { sampleDestination, defaultMockFns };