/metrics endpoint reports some metrics twice

# HELP exposer_scrapes_total Number of times metrics were scraped

# TYPE exposer_scrapes_total counter

exposer_scrapes_total 38.000000

2 # HELP exposer_request_latencies Latencies of serving scrape requests, in microseconds

   2 # HELP exposer_scrapes_total Number of times metrics were scraped

   2 # HELP exposer_transferred_bytes_total Transferred bytes to metrics services

   2 # TYPE exposer_request_latencies summary

   2 # TYPE exposer_scrapes_total counter

   2 # TYPE exposer_transferred_bytes_total counter

   2 exposer_request_latencies_count 38

   2 exposer_scrapes_total 38.000000