Eliminate unused import of ZipException (flutter#7429)

cbracken · web-flow · commit 20d70d2bf4d2 · 2019-01-09T15:08:43.000-08:00
Use of this class was eliminated in flutter/engine#7398.
diff --git a/shell/platform/android/io/flutter/view/ResourceExtractor.java b/shell/platform/android/io/flutter/view/ResourceExtractor.java
@@ -23,7 +23,6 @@
 import java.util.concurrent.ExecutionException;
 import java.util.zip.CRC32;
 import java.util.zip.ZipEntry;
-import java.util.zip.ZipException;
 import java.util.zip.ZipFile;
 
 /**
