remove warning from qa_package

[dmullen17]

Discussed with @jagoldstein about removing the following warning from qa_package. Integers are used to represent nominal values far more often than characters.

if (matchingAtt$measurementScale != "ratio" && matchingAtt$measurementScale != "interval" && matchingAtt$measurementScale != "dateTime") {
                    cat(crayon::yellow(paste0("\nMismatch in attribute type for the attribute '", matchingAtt$attributeName,
                                              "'. Type of data is ", attClass, " which should probably have interval or ratio measurementScale in EML, not ",
                                              matchingAtt$measurementScale, ".")))

The two checks following this one (lines 480-497) could also be removed