cve-update-nvd2-native: Remove rejected CVE from database

When a CVE is updated to be rejected, matching database entries must be
removed. Otherwise:
* an incremental update is not equivalent the to an initial download.
* rejected CVEs might still appear as Unpatched in cve-check.

(From OE-Core rev: 717f0df5f35272f7706e4f92cc8b57cdda8066b6)

Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit f276a980b8930b98e6c8f0e1a865d77dfcfe5085)
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/recipes-core/meta/cve-update-nvd2-native.bb

@@ -323,6 +323,10 @@ def update_db(conn, elt):
     accessVector = None
     cveId = elt['cve']['id']
     if elt['cve']['vulnStatus'] ==  "Rejected":
+        c = conn.cursor()
+        c.execute("delete from PRODUCTS where ID = ?;", [cveId])
+        c.execute("delete from NVD where ID = ?;", [cveId])
+        c.close()
         return
     cveDesc = ""
     for desc in elt['cve']['descriptions']: