remove unused lib

Signed-off-by: Thomas Poignant <[email protected]>

Author: thomaspoignant

providers/go-feature-flag/pom.xml

@@ -56,12 +56,6 @@
             <scope>test</scope>
         </dependency>
 
-        <dependency>
-            <groupId>com.github.ben-manes.caffeine</groupId>
-            <artifactId>caffeine</artifactId>
-            <version>2.9.3</version>
-        </dependency>
-
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>