feat/940 stopped calling updateSpeechCredentialLastUsed (#944)

lib/tasks/tts-task.js

@@ -46,7 +46,6 @@ class TtsTask extends Task {
 
   async _synthesizeWithSpecificVendor(cs, ep, {vendor, language, voice, label, preCache = false}) {
     const {srf, accountSid:account_sid} = cs;
-    const {updateSpeechCredentialLastUsed} = require('../utils/db-utils')(this.logger, srf);
     const {writeAlerts, AlertType, stats} = srf.locals;
     const {synthAudio} = srf.locals.dbHelpers;
     const engine = this.synthesizer.engine || cs.synthesizer?.engine || 'neural';
@@ -141,8 +140,6 @@ class TtsTask extends Task {
         }).catch((err) => this.logger.info({err}, 'Error generating alert for no tts'));
         throw new SpeechCredentialError('no provisioned speech credentials for TTS');
       }
-      // synthesize all of the text elements
-      let lastUpdated = false;
 
       /* produce an audio segment from the provided text */
       const generateAudio = async(text) => {
@@ -182,10 +179,6 @@ class TtsTask extends Task {
               this.otelSpan.end();
               this.otelSpan = null;
             }
-            if (!servedFromCache && !lastUpdated) {
-              lastUpdated = true;
-              updateSpeechCredentialLastUsed(credentials.speech_credential_sid).catch(() => {/* logged error */});
-            }
             if (!servedFromCache && rtt && !preCache  && !this._disableTracing) {
               this.notifyStatus({
                 event: 'synthesized-audio',