common.sh: remove setup_board_warning

This function is no longer used. Remove it.

BUG=None
BRANCH=None
TEST=presubmit

Change-Id: I9b0670c59bfd9c830aadf2b34e7c68c9f9580d75
Signed-off-by: Jack Rosenthal <jrosenth@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1740608
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Alex Klein <saklein@chromium.org>
diff --git a/common.sh b/common.sh
index df4b83e..11c94d4 100644
--- a/common.sh
+++ b/common.sh
@@ -500,17 +500,6 @@
 # -----------------------------------------------------------------------------
 # Functions
 
-setup_board_warning() {
-  echo
-  echo "${V_REVERSE}================  WARNING  =====================${V_VIDOFF}"
-  echo
-  echo "*** No default board detected in " \
-    "${GCLIENT_ROOT}/src/scripts/.default_board"
-  echo "*** Either run setup_board with default flag set"
-  echo "*** or echo |board_name| > ${GCLIENT_ROOT}/src/scripts/.default_board"
-  echo
-}
-
 # Enter a chroot and restart the current script if needed
 restart_in_chroot_if_needed() {
   # NB:  Pass in ARGV:  restart_in_chroot_if_needed "$@"