Cleanup unreachable cert adding code

net/android/network_library.h

Index: net/android/network_library.h
diff --git a/net/android/network_library.h b/net/android/network_library.h
index 7e1c8000fd58a197357d05d26441aa23333ac099..24610bb50d2b4c3649d49fe15bee3cb730a8155d 100644
--- a/net/android/network_library.h
+++ b/net/android/network_library.h
@@ -45,12 +45,6 @@ bool StoreKeyPair(const uint8_t* public_key,
                   const uint8_t* private_key,
                   size_t private_len);
 
-// Helper used to pass the DER-encoded bytes of an X.509 certificate or
-// a PKCS#12 archive holding a private key to the CertInstaller activity.
-NET_EXPORT void StoreCertificate(CertificateMimeType cert_type,
-                                 const void* data,
-                                 size_t data_len);
-
 // Returns true if it can determine that only loopback addresses are configured.
 // i.e. if only 127.0.0.1 and ::1 are routable.
 // Also returns false if it cannot determine this.