Removing unused usages of clojure.reflect in order to remove this dependency

[irfn]

As discussed in Issue #349, I am removing various reflection methods which don't appear to be used anywhere. PR is a simple removal of unused code scoped to the ones that are linked to usage of clojure.reflect

[irfn]

I didn't notice that CI was using maven. Will run maven for tests locally.

[irfn]

strange but the build passes locally using docker. steps followed docker build -f ./docker/Dockerfile . -t core.matrix-dev docker run -it --entrypoint bash core.matrix-dev this launches the shell then run mvn clean mvn install -DskipTests=true -Dmaven.javadoc.skip=true mvn test -B