Clean up CompactTest codegen

Summary: As above

Reviewed By: lenar-f

Differential Revision: D63985740

fbshipit-source-id: df6746d50c44e31c0fb04d408627995b646adec3

Author: Stuart Clark

third-party/mcrouter/src/mcrouter/lib/carbon/test/Util.h

@@ -20,7 +20,6 @@ namespace carbon {
 namespace test {
 
 class TestRequest;
-class TestCompactRequest;
 
 namespace util {