Remove unused flags.

Change-Id: Ie1bcbb0743d65e92072628811706d49753023205

main.go

@@ -50,14 +50,12 @@ var (
 	remoteTSDBUrl     = flag.String("storage.remote.url", "", "The URL of the OpenTSDB instance to send samples to.")
 	remoteTSDBTimeout = flag.Duration("storage.remote.timeout", 30*time.Second, "The timeout to use when sending samples to OpenTSDB.")
 
-	samplesQueueCapacity      = flag.Int("storage.queue.samplesCapacity", 4096, "The size of the unwritten samples queue.")
-	diskAppendQueueCapacity   = flag.Int("storage.queue.diskAppendCapacity", 1000000, "The size of the queue for items that are pending writing to disk.")
-	memoryAppendQueueCapacity = flag.Int("storage.queue.memoryAppendCapacity", 10000, "The size of the queue for items that are pending writing to memory.")
+	samplesQueueCapacity = flag.Int("storage.queue.samplesCapacity", 4096, "The size of the unwritten samples queue.")
 
 	memoryEvictionInterval = flag.Duration("storage.memory.evictionInterval", 15*time.Minute, "The period at which old data is evicted from memory.")
 	memoryRetentionPeriod  = flag.Duration("storage.memory.retentionPeriod", time.Hour, "The period of time to retain in memory during evictions.")
 
-	storagePurgeInterval   = flag.Duration("storage.purgeInterval", time.Hour, "How frequently to purge old data from the storage.")
+	storagePurgeInterval   = flag.Duration("storage.purgeInterval", time.Hour, "The period at which old data is deleted completely from storage.")
 	storageRetentionPeriod = flag.Duration("storage.retentionPeriod", 15*24*time.Hour, "The period of time to retain in storage.")
 
 	notificationQueueCapacity = flag.Int("alertmanager.notificationQueueCapacity", 100, "The size of the queue for pending alert manager notifications.")