Do not pull optional dependencies

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

rust-smallvec.spec

@@ -7,7 +7,7 @@
 
 Name:           rust-%{crate}
 Version:        0.6.9
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        'Small vector' optimization: store up to a small number of items on the stack
 
 # Upstream license specification: MIT/Apache-2.0
@@ -18,7 +18,6 @@ Source:         %{crates_source}
 ExclusiveArch:  %{rust_arches}
 
 BuildRequires:  rust-packaging
-BuildRequires:  (crate(serde/default) >= 1.0.0 with crate(serde/default) < 2.0.0)
 %if %{with check}
 BuildRequires:  (crate(bincode/default) >= 1.0.1 with crate(bincode/default) < 2.0.0)
 %endif
@@ -94,6 +93,9 @@ which use "std" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Sun Mar 10 2019 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.6.9-2
+- Do not pull optional dependencies
+
 * Mon Feb 18 2019 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.6.9-1
 - Update to 0.6.9