Description: Drop build-dependency on libext4_utils
 fastboot uses none of the symbols provided by libext4_utils but still includes
 a header of it. Removing it shall be enough.
--- a/fastboot/fs.cpp
+++ b/fastboot/fs.cpp
@@ -23,7 +23,6 @@
 #include <android-base/file.h>
 #include <android-base/stringprintf.h>
 #include <android-base/unique_fd.h>
-#include <ext4_utils/make_ext4fs.h>
 #include <sparse/sparse.h>
 
 using android::base::StringPrintf;