Don't pre-opt shims

There's no code, so, no need to pre-opt the shims
Bug: 28398205

Change-Id: Ie7d33a59fafe963a6d60fa645d580fe1d770aba6
diff --git a/packages/CtsShim/Android.mk b/packages/CtsShim/Android.mk
index b827bdf..cd5b288 100644
--- a/packages/CtsShim/Android.mk
+++ b/packages/CtsShim/Android.mk
@@ -29,6 +29,7 @@
 LOCAL_BUILT_MODULE_STEM := package.apk
 # Make sure the build system doesn't try to resign the APK
 LOCAL_CERTIFICATE := PRESIGNED
+LOCAL_DEX_PREOPT := false
 
 LOCAL_SRC_FILES := CtsShimPriv.apk
 
@@ -46,6 +47,7 @@
 LOCAL_BUILT_MODULE_STEM := package.apk
 # Make sure the build system doesn't try to resign the APK
 LOCAL_CERTIFICATE := PRESIGNED
+LOCAL_DEX_PREOPT := false
 
 LOCAL_SRC_FILES := CtsShim.apk