fix a few useless warnings (#11899)
fix a few useless warnings (#11899)


wiltonlazary/arangodb,wiltonlazary/arangodb,graetzer/arangodb,Simran-B/arangodb,arangodb/arangodb,graetzer/arangodb,Simran-B/arangodb,Simran-B/arangodb,wiltonlazary/arangodb,Simran-B/arangodb,graetzer/arangodb,wiltonlazary/arangodb,graetzer/arangodb,graetzer/arangodb,arangodb/arangodb,Simran-B/arangodb,arangodb/arangodb,graetzer/arangodb,arangodb/arangodb,graetzer/arangodb,arangodb/arangodb,Simran-B/arangodb,Simran-B/arangodb,wiltonlazary/arangodb,graetzer/arangodb,graetzer/arangodb,arangodb/arangodb,wiltonlazary/arangodb,wiltonlazary/arangodb,graetzer/arangodb,graetzer/arangodb,arangodb/arangodb,Simran-B/arangodb,arangodb/arangodb,graetzer/arangodb,Simran-B/arangodb,graetzer/arangodb,Simran-B/arangodb,wiltonlazary/arangodb,graetzer/arangodb