Remove unneccessary TARGET_BUILD_APPS conditional

The prebuilt tools no longer conflict with the tools built from source,
remove the conditional.

Change-Id: Id334e25d9cfa2d5934450dd223bc9e30cd890062
diff --git a/tools/Android.mk b/tools/Android.mk
index 30a064f..9073ac3 100644
--- a/tools/Android.mk
+++ b/tools/Android.mk
@@ -16,17 +16,4 @@
 
 LOCAL_PATH := $(call my-dir)
 
-ifeq (,$(TARGET_BUILD_APPS))
-
-ifeq ($(TARGET_BUILD_PDK),true)
-include $(filter-out %/acp/Android.mk %/signapk/Android.mk %/zipalign/Android.mk,\
-  $(call all-makefiles-under,$(LOCAL_PATH)))
-else # !PDK
 include $(call all-makefiles-under,$(LOCAL_PATH))
-endif # PDK
-
-else # TARGET_BUILD_APPS
-
-include $(LOCAL_PATH)/apicheck/Android.mk $(LOCAL_PATH)/ijar/Android.mk
-
-endif