package/perl-net-snmp: remove 'v' prefix

Fixes version parsing for release-monitoring.org support.

Signed-off-by: Matthew Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/perl-net-snmp/perl-net-snmp.mk

@@ -4,8 +4,8 @@
 #
 ################################################################################
 
-PERL_NET_SNMP_VERSION = v6.0.1
-PERL_NET_SNMP_SOURCE = Net-SNMP-$(PERL_NET_SNMP_VERSION).tar.gz
+PERL_NET_SNMP_VERSION = 6.0.1
+PERL_NET_SNMP_SOURCE = Net-SNMP-v$(PERL_NET_SNMP_VERSION).tar.gz
 PERL_NET_SNMP_SITE = $(BR2_CPAN_MIRROR)/authors/id/D/DT/DTOWN
 PERL_NET_SNMP_DEPENDENCIES = host-perl-module-build
 PERL_NET_SNMP_LICENSE = Artistic or GPL-1.0+