Remove redundant camel.sb.docs.branch property

pom.xml

@@ -44,7 +44,6 @@
         <camel.docs.components.version>${camel.major.minor}.x</camel.docs.components.version><!-- the version in Camel's docs/components/antora.yml -->
         <camel.docs.components.xref>${camel.docs.components.version}@components</camel.docs.components.xref><!-- the version in Camel's docs/components/antora.yml -->
         <camel.docs.branch>camel-${camel.major.minor}.x</camel.docs.branch><!-- The stable camel branch on which our Antora docs depends -->
-        <camel.sb.docs.branch>camel-spring-boot-${camel.major.minor}.x</camel.sb.docs.branch><!-- The stable camel-spring-boot branch on which our Antora docs depends -->
         <cassandra-quarkus.version>1.2.0</cassandra-quarkus.version><!-- This should be in sync with quarkus-platform https://repo1.maven.org/maven2/com/datastax/oss/quarkus/cassandra-quarkus-bom/ -->
         <debezium.version>2.7.3.Final</debezium.version> <!-- This should be in sync with quarkus-platform https://github.com/quarkusio/quarkus-platform-->
         <optaplanner.version>9.37.0.Final</optaplanner.version><!-- This should be in sync with quarkus-platform https://repo1.maven.org/maven2/org/optaplanner/optaplanner-quarkus/ -->