Remove theme check

It's not needed now

Change-Id: I4a45e6fdfe10a7de3127df96b422a57983ee8ff6
diff --git a/v7/appcompat/src/android/support/v7/app/AppCompatDelegateImplV7.java b/v7/appcompat/src/android/support/v7/app/AppCompatDelegateImplV7.java
index 3235bdb..54ec0ad 100644
--- a/v7/appcompat/src/android/support/v7/app/AppCompatDelegateImplV7.java
+++ b/v7/appcompat/src/android/support/v7/app/AppCompatDelegateImplV7.java
@@ -275,12 +275,6 @@
 
     private void ensureSubDecor() {
         if (!mSubDecorInstalled) {
-            if (!mThemeRead) {
-                throw new IllegalStateException("AppCompat can not install it's decor before "
-                        + "reading the theme. This is usually caused by calling setContentView() "
-                        + "before super.onCreate().");
-            }
-            
             mSubDecor = createSubDecor();
 
             // If a title was set before we installed the decor, propogate it now