Revert "jenkinsfile: enable uci"

This reverts commit de099a44ac.

Jenkinsfile

@@ -87,7 +87,7 @@ pipeline {
 					stage('Build') {
 						steps {
 							withEnv(["${LINKER_ENV_KEY}=${CC}", "RUSTFLAGS=-C target-feature=+crt-static"]) {
-								sh "cargo build --release --target ${TARGET} --features uci"
+								sh "cargo build --release --target ${TARGET}"
 							}
 						}
 					}