update release to not include OZ abis

Author: joaquim-verges

release.sh

@@ -10,7 +10,6 @@ rm -rf contracts/abi
 mkdir -p contracts/abi
 # copy all abis to contracts/abi
 find artifacts/contracts ! -iregex ".*([a-zA-Z0-9_]).json" -exec cp {} contracts/abi 2>/dev/null \; 
-find artifacts/@openzeppelin ! -iregex ".*([a-zA-Z0-9_]).json" -exec cp {} contracts/abi 2>/dev/null \;
 # remove non-abi files
 rm contracts/abi/*.dbg.json
 echo "### Copying README."