Revert add of BuildRequires: nss-util-devel

Not needed after all, the missing header is supposed to be in nss-devel

evolution-data-server.spec

@@ -69,7 +69,6 @@ BuildRequires: libsoup-devel >= %{libsoup_version}
 BuildRequires: libtool
 BuildRequires: nspr-devel
 BuildRequires: nss-devel
-BuildRequires: nss-util-devel
 BuildRequires: sqlite-devel >= %{sqlite_version}
 BuildRequires: vala
 BuildRequires: vala-tools