Remove fs_get_stats.

This was only used by the tarball-building support that was removed
in 2019.

Test: treehugger
Change-Id: I719364699d426d21010c3ab913d12f15128f2538
diff --git a/core/config.mk b/core/config.mk
index dbee0a0..1c4a10f 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -172,6 +172,7 @@
 $(KATI_obsolete_var BOARD_PREBUILT_PVMFWIMAGE,pvmfw.bin is now built in AOSP and custom versions are no longer supported)
 $(KATI_obsolete_var BUILDING_PVMFW_IMAGE,BUILDING_PVMFW_IMAGE is no longer used)
 $(KATI_obsolete_var BOARD_BUILD_SYSTEM_ROOT_IMAGE)
+$(KATI_obsolete_var FS_GET_STATS)
 
 # Used to force goals to build.  Only use for conditionally defined goals.
 .PHONY: FORCE
@@ -690,7 +691,6 @@
 AVBTOOL := $(BOARD_CUSTOM_AVBTOOL)
 endif
 APICHECK := $(HOST_OUT_JAVA_LIBRARIES)/metalava$(COMMON_JAVA_PACKAGE_SUFFIX)
-FS_GET_STATS := $(HOST_OUT_EXECUTABLES)/fs_get_stats$(HOST_EXECUTABLE_SUFFIX)
 MKEXTUSERIMG := $(HOST_OUT_EXECUTABLES)/mkuserimg_mke2fs
 MKE2FS_CONF := system/extras/ext4_utils/mke2fs.conf
 MKEROFS := $(HOST_OUT_EXECUTABLES)/mkfs.erofs