Reducing the unnecessary logging of the TANGO device.

[kmadisa]

This is a minor change to reduce the unnecessary logging that occurs when an attribute is read/written.

Screenshots or code snippets (if appropriate):

Figure 1. This is a snapshot of the console output when we run the unit test, which is too noisy.

Definition of Done Checklist

• [x] Code meets our python style guidelines?
• [x] Unit tested (coded, passed, included)?
• [x] Requested at least 2 reviewers?
• [x] Commented code, particularly in hard-to-understand areas?
• [x] Made corresponding changes to the documentation (e.g. Python documentation, System Engineering Documentation, version description updates, README file, etc)?

JIRA: [N/A]()