RestApiServlet#setCacheHeaders: Remove unused type parameter

Release-Notes: skip
Change-Id: I59f857cc8e5f001e7dde86d3179c04ed33a64c85
Signed-off-by: Edwin Kempin <ekempin@google.com>

java/com/google/gerrit/httpd/restapi/RestApiServlet.java

diff --git a/java/com/google/gerrit/httpd/restapi/RestApiServlet.java b/java/com/google/gerrit/httpd/restapi/RestApiServlet.java
index a8a79dc..a17548f 100644
--- a/java/com/google/gerrit/httpd/restapi/RestApiServlet.java
+++ b/java/com/google/gerrit/httpd/restapi/RestApiServlet.java
@@ -1063,7 +1063,7 @@
     }
   }
 
-  private static <R extends RestResource> void setCacheHeaders(
+  private static void setCacheHeaders(
       HttpServletRequest req, HttpServletResponse res, CacheControl cacheControl) {
     if (isRead(req)) {
       switch (cacheControl.getType()) {