Update docs/api/covidcast-signals/indicator-combination.md

docs: eliminate redundant elements from indicator-combination.md

Co-authored-by: george <[email protected]>

Author: JavierMtzRdz

docs/api/covidcast-signals/indicator-combination.md

@@ -38,10 +38,6 @@ See [COVIDcast Signal Changes](../covidcast_changelog.md) for general informatio
 
 Standard errors are now included in the `nmf_day_doc_fbc_fbs_ght` signal for all geo levels and dates, representing the estimated uncertainty in this signal. This uncertainty comes because the signal is a combination of other signals based on survey estimates or other estimates with margins of error.
 
-* `nmf_day_doc_fbc_fbs_ght`
-  * all geo levels
-    * all dates
-
 </details>
 
 ## Overview