Log cleanups (#5135)

* Log cleanups

change log levels, shorten log messages, delete commented out logs

* Address comments from review

* Remove full stops

* EDEBUG --> DEBUG

src/platform/nrf52/main-nrf52.cpp

@@ -309,4 +309,4 @@ void enterDfuMode()
 #else
     enterUf2Dfu();
 #endif
-}
+}