Update app.py

delete dud data file _speech.txt

app.py

@@ -50,6 +50,10 @@ def genUsageStats(do_reset=False):
     totalAudio = 0
     totalSpeech = 0
     totalImages = 0
+    if do_reset:
+        dudPath = dataDir + '_speech.txt'
+        if os.path.exists(dudPath):
+            os.remove(dudPath)
     for user in unames:
         tokens4o_in = 0
         tokens4o_out = 0