remove Helloworld espresso test (#77)

example/android/app/src/androidTest/java/com/datepickerexample/HelloWorldEspressoTest.java

@@ -1,56 +0,0 @@
-package com.datepickerexample;
-
-
-import android.support.test.espresso.ViewInteraction;
-import android.support.test.rule.ActivityTestRule;
-import android.support.test.runner.AndroidJUnit4;
-import android.test.suitebuilder.annotation.LargeTest;
-import android.view.KeyEvent;
-
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-import static android.support.test.espresso.Espresso.onView;
-import static android.support.test.espresso.action.ViewActions.click;
-import static android.support.test.espresso.action.ViewActions.pressKey;
-import static android.support.test.espresso.action.ViewActions.replaceText;
-import static android.support.test.espresso.matcher.ViewMatchers.isDisplayed;
-import static android.support.test.espresso.matcher.ViewMatchers.withContentDescription;
-import static android.support.test.espresso.matcher.ViewMatchers.withText;
-import static org.hamcrest.Matchers.allOf;
-
-@LargeTest
-@RunWith(AndroidJUnit4.class)
-public class HelloWorldEspressoTest {
-
-    @Rule
-    public ActivityTestRule<MainActivity> mActivityTestRule = new ActivityTestRule<>(MainActivity.class);
-
-    @Test
-    public void mainActivityTest() {
-        try {
-            Thread.sleep(15000);
-        } catch (InterruptedException e) {
-            e.printStackTrace();
-        }
-
-        ViewInteraction minimal = onView(allOf(withText("Minimal"), isDisplayed()));
-        minimal.perform(click());
-
-        onView(allOf(withText("Today"), isDisplayed()));
-
-        onView(allOf(withText("Back"), isDisplayed())).perform(click());
-
-        minimal = onView(allOf(withText("Minimal"), isDisplayed()));
-        minimal.perform(click());
-
-
-        try {
-            Thread.sleep(30000);
-        } catch (InterruptedException e) {
-            e.printStackTrace();
-        }
-
-    }
-}