disable repl test on CI

Author: liufengyun

project/scripts/cmdTests

@@ -72,5 +72,5 @@ fi
 ./project/scripts/sbt ";dist-bootstrapped/pack"
 ./dist-bootstrapped/target/pack/bin/dotc tests/run/hello.scala
 ./dist-bootstrapped/target/pack/bin/dotr Test
-echo ":quit" | ./dist-bootstrapped/target/pack/bin/dotr
+# echo ":quit" | ./dist-bootstrapped/target/pack/bin/dotr  # not supported by CI
 mkdir -p _site && ./dist-bootstrapped/target/pack/bin/dotd -project Hello -siteroot _site tests/run/hello.scala