spec: fix double -j param

_smp_mflags is used for parallel builds, but we don't need them here.

Author: sni

support/mod_gearman.spec

@@ -47,7 +47,7 @@ test -f configure || ./autogen.sh
      --with-init-dir="%{_initrddir}" \
      --enable-embedded-perl
 
-%{__make} -j1 %{_smp_mflags}
+%{__make} -j1
 
 %install
 %{__rm} -rf %{buildroot}