Do not log transcribed text from whisper

Turning off the verbose mode when calling whisper process.
This should fix issue #17

src/main/java/se/su/dsv/seshat/services/Transcriber.java

@@ -47,7 +47,9 @@ public class Transcriber {
                 .append(" --output_dir ")
                 .append(outputDirectory)
                 .append(" --device ")
-                .append(selectedDevice);
+                .append(selectedDevice)
+                .append(" --verbose ")
+                .append("False");
         if(language != null && !language.equalsIgnoreCase("auto")) {
             whisperCommandOptions.append(" --language ")
                     .append(language);