Remove sdk-linux-x86.atree as well

I missed this one in my last change.

Bug: 187222815
Change-Id: Ibdbde80fe531d53ce9e89136211bdf85932c058c
diff --git a/core/Makefile b/core/Makefile
index 8fb8b7a..b268f57 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -5895,9 +5895,7 @@
 atree_dir := development/build
 
 
-sdk_atree_files := \
-	$(atree_dir)/sdk.exclude.atree \
-	$(atree_dir)/sdk-linux-$(SDK_HOST_ARCH).atree
+sdk_atree_files := $(atree_dir)/sdk.exclude.atree
 
 # development/build/sdk-android-<abi>.atree is used to differentiate
 # between architecture models (e.g. ARMv5TE versus ARMv7) when copying