Changes to yangtools functions.xml not updated in controller or integration

Commit: Change-Id: I8238a67676f25c11388ad94d276252a8a67df535
Signed-off-by: Tony Tkacik <ttkacik@cisco.com>

Removed odl-yangtools-models. These are still referenced as requirements in the following:

controller/opendaylight/archetypes/opendaylight-karaf-features/target/test-classes/projects/basic/project/basic/src/main/resources/features.xml: <feature version='0.8.0-SNAPSHOT'>odl-yangtools-models</feature>
controller/opendaylight/archetypes/opendaylight-karaf-features/target/classes/archetype-resources/src/main/resources/features.xml: <feature version='0.8.0-SNAPSHOT'>odl-yangtools-models</feature>
controller/opendaylight/archetypes/opendaylight-karaf-features/src/main/resources/archetype-resources/src/main/resources/features.xml: <feature version='0.8.0-SNAPSHOT'>odl-yangtools-models</feature>
integration/distributions/karaf/target/assembly/system/org/opendaylight/ovsdb/southbound-features/1.2.0-SNAPSHOT/southbound-features-1.2.0-SNAPSHOT-features.xml: <feature version="0.8.0-SNAPSHOT">odl-yangtools-models</feature>
integration/distributions/karaf/target/assembly/system/org/opendaylight/controller/features-restconf/1.3.0-SNAPSHOT/features-restconf-1.3.0-SNAPSHOT-features.xml: <feature version='0.8.0-SNAPSHOT'>odl-yangtools-models</feature>
integration/distributions/karaf/target/assembly/system/org/opendaylight/controller/features-netconf-connector/1.3.0-SNAPSHOT/features-netconf-connector-1.3.0-SNAPSHOT-features.xml: <feature version='0.8.0-SNAPSHOT'>odl-yangtools-models</feature>

This causes the build to not be able to install various features:

No feature named 'odl-yangtools-models' with version '0.8.0-SNAPSHOT' available