Replace deprecated oracleTempSchema with tempEmulationSchema

[schuemie]

Several functions like 'getConceptCodeDetails()' have an oracleTempSchema argument. First of all, please make sure this is really necessary. Are these functions using temp tables? Second, oracleTempSchema has been deprecated across HADES. Please use `tempEmulationSchema' instead, and set the default value like this.

[mdlavallee92]

At first, I did a replace of all oracleTempSchema but good point this probably doesn't need a temp schema since it is just querying off the vocabulary schema into an R data.frame. I will remove that option from the function.

Issue will close when I merge the pull request.