Remove extra semi colon from katran/lib/testing/PcapParser.cpp

Summary:
`-Wextra-semi` or `-Wextra-semi-stmt`

If the code compiles, this is safe to land.

Reviewed By: dmm-fb

Differential Revision: D52969181

fbshipit-source-id: 9de0abf53932fd9b6eecd1a81710919bcfce05a0

katran/lib/testing/PcapParser.cpp

@@ -142,7 +142,7 @@ std::string PcapParser::getPacketFromPcapBase64() {
 std::string PcapParser::convertPacketToBase64(
     std::unique_ptr<folly::IOBuf> pckt) {
   return Base64Helpers::base64Encode(pckt.get());
-};
+}
 
 std::unique_ptr<folly::IOBuf> PcapParser::getPacketFromBase64(
     const std::string& encodedPacket) {