Don't package mke2fs.conf in otatools.zip

mke2fs.conf is now packaged into the Python executable mkuserimg_mke2fs
and no longer needs to be packaged directly into otatools.zip.

Change-Id: I06216ccd60f834747f9302e30397a7f0bae53726
diff --git a/core/Makefile b/core/Makefile
index 6c90b51..a86b7b7 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -3655,7 +3655,6 @@
   mkbootfs \
   mkbootimg \
   mke2fs \
-  mke2fs.conf \
   mkf2fsuserimg.sh \
   mksquashfs \
   mksquashfsimage.sh \