don't get proto defs from gitlab

reverts build.sh to original

Author: devrandom

.github/scripts/build.sh

@@ -28,8 +28,6 @@ poetry install
 git clone https://github.com/lightningnetwork/lightning-rfc.git ../lightning-rfc
 git submodule update --init --recursive
 
-wget -q --directory-prefix=contrib/remote_hsmd https://gitlab.com/lightning-signer/validating-lightning-signer/-/raw/master/src/server/remotesigner.proto
-
 ./configure CC="$CC"
 cat config.vars