Update jhu-csse.md

Remove confirmed_7dav_cumulative_num and confirmed_7dav_cumulative_prop

Author: carlynvandyke

docs/api/covidcast-signals/jhu-csse.md

@@ -24,8 +24,8 @@ University.
 
 | Signal and 7-day average signal | Description |
 |---|---|
-| `confirmed_cumulative_num` and `confirmed_7dav_cumulative_num` | Cumulative number of confirmed COVID-19 cases <br/> **Earliest date available:** 2020-01-22 & 2020-02-20 |
-| `confirmed_cumulative_prop` and `confirmed_7dav_cumulative_prop` | Cumulative number of confirmed COVID-19 cases per 100,000 population <br/> **Earliest date available:** 2020-01-22 & 2020-02-20 |
+| `confirmed_cumulative_num` | Cumulative number of confirmed COVID-19 cases <br/> **Earliest date available:** 2020-01-22 & 2020-02-20 |
+| `confirmed_cumulative_prop` | Cumulative number of confirmed COVID-19 cases per 100,000 population <br/> **Earliest date available:** 2020-01-22 & 2020-02-20 |
 | `confirmed_incidence_num` and `confirmed_7dav_incidence_num` | Number of new confirmed COVID-19 cases, daily <br/> **Earliest date available:** 2020-01-22 & 2020-02-20 |
 | `confirmed_incidence_prop` and `confirmed_7dav_incidence_prop` | Number of new confirmed COVID-19 cases per 100,000 population, daily <br/> **Earliest date available:** 2020-01-22 & 2020-02-20 |
 | `deaths_cumulative_num` and `deaths_7dav_cumulative_num` | Cumulative number of confirmed deaths due to COVID-19 <br/> **Earliest date available:** 2020-01-22 & 2020-02-20 |