build-github.sh: fix cloning DEY from GitHub

Seems that 'meta-openembedded' repo does not allow shallow clones. It
fails when '--depth' option is passed:

$ git clone --depth 1 https://git.openembedded.org/meta-openembedded
Cloning into 'meta-openembedded'...
fatal: dumb http transport does not support shallow capabilities

Remove that option to allow building DEY-4.0 from GitHub repos in the
buildserver.

Signed-off-by: Javier Viguera <javier.viguera@digi.com>

sdk/build-github.sh

@@ -179,7 +179,7 @@ if pushd ${YOCTO_INST_DIR}; then
 			error "Revision \"${DY_REVISION}\" not found"
 		fi
 	fi
-	yes "" 2>/dev/null | ${REPO} init --depth=1 --no-repo-verify -u ${MANIFEST_URL} ${repo_revision}
+	yes "" 2>/dev/null | ${REPO} init --no-repo-verify -u ${MANIFEST_URL} ${repo_revision}
 	${REPO} forall -p -c 'git remote prune $(git remote)'
 	time ${REPO} sync -d ${MAKE_JOBS}
 	popd