Migrate from Expect.createAndEnableStackTrace() to Expect.create().

The two methods are now equivalent. (That is, Expect.create() enables stack traces, too.) Expect.createAndEnableStackTrace() will be deprecated and deleted.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=244440373
diff --git a/core/src/test/java/com/google/common/truth/ExpectFailureWithStackTraceTest.java b/core/src/test/java/com/google/common/truth/ExpectFailureWithStackTraceTest.java
index 5a31c62..3542475 100644
--- a/core/src/test/java/com/google/common/truth/ExpectFailureWithStackTraceTest.java
+++ b/core/src/test/java/com/google/common/truth/ExpectFailureWithStackTraceTest.java
@@ -40,7 +40,7 @@
 
   /** Expect class that can examine the error message */
   public static class FailingExpect implements TestRule {
-    final Expect delegate = Expect.createAndEnableStackTrace();
+    final Expect delegate = Expect.create();
 
     @Override
     public Statement apply(Statement base, Description description) {
diff --git a/core/src/test/java/com/google/common/truth/ExpectWithStackTest.java b/core/src/test/java/com/google/common/truth/ExpectWithStackTest.java
index 41cca56..35ea6f7 100644
--- a/core/src/test/java/com/google/common/truth/ExpectWithStackTest.java
+++ b/core/src/test/java/com/google/common/truth/ExpectWithStackTest.java
@@ -28,7 +28,7 @@
 
 @RunWith(JUnit4.class)
 public class ExpectWithStackTest {
-  private final Expect expectWithTrace = Expect.createAndEnableStackTrace();
+  private final Expect expectWithTrace = Expect.create();
 
   @Rule public final TestRuleVerifier verifyAssertionError = new TestRuleVerifier(expectWithTrace);