mysql_client: remove --program-prefix

--program-prefix is now set in the auto-target infrastructure.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/mysql_client/mysql_client.mk

@@ -21,7 +21,6 @@ MYSQL_CLIENT_CONF_ENV = \
 	mysql_cv_new_rl_interface=yes
 
 MYSQL_CLIENT_CONF_OPT = \
-	--program-prefix="" \
 	--without-ndb-binlog \
 	--without-server \
 	--without-docs \