Remove residual support for SHA-1 public key pins.

net/cert/cert_verify_proc_ios.cc

Index: net/cert/cert_verify_proc_ios.cc
diff --git a/net/cert/cert_verify_proc_ios.cc b/net/cert/cert_verify_proc_ios.cc
index f443eaef989c337c73551e60420b4fd20dc00ef2..3ce903843300ae34e0f012ebd76bbb4e8349ef3c 100644
--- a/net/cert/cert_verify_proc_ios.cc
+++ b/net/cert/cert_verify_proc_ios.cc
@@ -134,10 +134,6 @@ void GetCertChainInfo(CFArrayRef cert_chain, CertVerifyResult* verify_result) {
       return;
     }
 
-    HashValue sha1(HASH_VALUE_SHA1);
-    CC_SHA1(spki_bytes.data(), spki_bytes.size(), sha1.data());
-    verify_result->public_key_hashes.push_back(sha1);
-
     HashValue sha256(HASH_VALUE_SHA256);
     CC_SHA256(spki_bytes.data(), spki_bytes.size(), sha256.data());
     verify_result->public_key_hashes.push_back(sha256);