blktrace: Disable build if simulator, + disable in general build

Signed-off-by: San Mehat <san@google.com>
diff --git a/Android.mk b/Android.mk
index 918aa5e..d4a16bb 100644
--- a/Android.mk
+++ b/Android.mk
@@ -1,7 +1,9 @@
-BUILD_BLKTRACE := true
+BUILD_BLKTRACE := false
 
 ifeq ($(BUILD_BLKTRACE), true)
 
+ifneq ($(TARGET_SIMULATOR),true)
+
 LOCAL_PATH := $(call my-dir)
 
 include $(CLEAR_VARS)
@@ -49,5 +51,5 @@
 #LOCAL_SYSTEM_SHARED_LIBRARIES := libc
 #include $(BUILD_EXECUTABLE)
 
-
+endif
 endif