package/libteam: drop LIBTEAM_CPE_ID_VENDOR

LIBTEAM_CPE_ID_VENDOR was wrongly set since the addition of the package
in commit 7485f5be as
cpe:2.3:a:libteam:libteam is not a valid CPE identifier for this
package:

  https://nvd.nist.gov/products/cpe/search/results?namingFormat=2.3&keyword=cpe%3A2.3%3Aa%3Alibteam%3Alibteam



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>