Remove kForceCertVerifierBuiltin which is unused

BUG=None
TEST=try

Change-Id: Iaa6fcf9e406da1f88470cd78843960880c9abfab
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2631629Reviewed-by: Pavol Marko <pmarko@chromium.org>
Commit-Queue: Yusuke Sato <yusukes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#844106}

chromeos/constants/chromeos_switches.cc

@@ -363,11 +363,6 @@ const char kFakeArcRecommendedAppsForTesting[] =
 // "keyboard-bottom-left", keyboard-bottom-right", "keyboard-top-right".
 const char kFingerprintSensorLocation[] = "fingerprint-sensor-location";
 
-// Forces Chrome to use CertVerifyProcBuiltin for verification of server
-// certificates, ignoring the status of
-// net::features::kCertVerifierBuiltinFeature.
-const char kForceCertVerifierBuiltin[] = "force-cert-verifier-builtin";
-
 // Passed to Chrome the first time that it's run after the system boots.
 // Not passed on restart after sign out.
 const char kFirstExecAfterBoot[] = "first-exec-after-boot";

chromeos/constants/chromeos_switches.h

@@ -153,8 +153,6 @@ extern const char kFakeArcRecommendedAppsForTesting[];
 COMPONENT_EXPORT(CHROMEOS_CONSTANTS)
 extern const char kFingerprintSensorLocation[];
 COMPONENT_EXPORT(CHROMEOS_CONSTANTS)
-extern const char kForceCertVerifierBuiltin[];
-COMPONENT_EXPORT(CHROMEOS_CONSTANTS)
 extern const char kForceDevToolsAvailable[];
 COMPONENT_EXPORT(CHROMEOS_CONSTANTS) extern const char kForceFirstRunUI[];
 COMPONENT_EXPORT(CHROMEOS_CONSTANTS)