java-1886: Make concurrency annotations optional again (reverts JAVA-1851)

Author: olim7t

changelog/README.md

@@ -16,7 +16,6 @@
 - [improvement] JAVA-1865: Add RelationMetadata.getPrimaryKey()
 - [improvement] JAVA-1862: Add ConsistencyLevel.isDcLocal and isSerial
 - [improvement] JAVA-1858: Implement Serializable in implementations, not interfaces
-- [improvement] JAVA-1851: Make dependency to JCIP annotations non optional
 - [improvement] JAVA-1830: Surface response frame size in ExecutionInfo
 - [improvement] JAVA-1853: Add newValue(Object...) to TupleType and UserDefinedType
 - [improvement] JAVA-1815: Reorganize configuration into basic/advanced categories

core/pom.xml

@@ -91,6 +91,7 @@
     <dependency>
       <groupId>com.github.stephenc.jcip</groupId>
       <artifactId>jcip-annotations</artifactId>
+      <optional>true</optional>
     </dependency>
     <dependency>
       <groupId>com.github.spotbugs</groupId>

query-builder/pom.xml

@@ -44,6 +44,7 @@
     <dependency>
       <groupId>com.github.stephenc.jcip</groupId>
       <artifactId>jcip-annotations</artifactId>
+      <optional>true</optional>
     </dependency>
     <dependency>
       <groupId>com.github.spotbugs</groupId>