Fix sim-eng build.

Don't try to do the host build if we're configured for sim-eng.  They
seem to be clashing, and it's redundant anyway.

Change-Id: I8e1a24b6e07d28701b32b6559ba39337b211264d
diff --git a/core/envsetup.mk b/core/envsetup.mk
index 5b0d88c..f556efe 100644
--- a/core/envsetup.mk
+++ b/core/envsetup.mk
@@ -119,10 +119,12 @@
   HOST_PREBUILT_TAG := $(HOST_OS)-$(HOST_ARCH)
 endif
 
-# Build dalvikvm on hosts that support it
+# Build dalvikvm on hosts that support it, but not if we're building the sim
 ifeq ($(HOST_OS),linux)
+ifneq ($(TARGET_SIMULATOR),true)
 	WITH_HOST_DALVIK := true
 endif
+endif
 
 
 # ---------------------------------------------------------------