mail/msmtp: don't run autoreconf

The 'autoreconf' was added due to the PATCHFILE added in 04ea6b3ea1.
This patch was later removed, but the 'autoreconf' was left, causing
some issues, for example, requiring gettext during the build stage,
even when NLS is disabled.

Reported by:	Ole Lemke

mail/msmtp/Makefile

@@ -12,7 +12,7 @@ WWW=		https://marlam.de/msmtp/
 LICENSE=	GPLv3
 
 GNU_CONFIGURE=	yes
-USES=		autoreconf cpe gmake makeinfo pkgconfig tar:xz
+USES=		cpe gmake makeinfo pkgconfig tar:xz
 CPPFLAGS+=	-I${LOCALBASE}/include
 LDFLAGS+=	-L${LOCALBASE}/lib
 INFO=		msmtp