Import "Cleanup some copyright stuff" from upstream OpenSSL

This imports
https://github.com/openssl/openssl/commit/624265c60e07f8e5f251d0f5b79e34cf0221af73
from upstream OpenSSL. The only part that applies to BoringSSL is
x_spki.c.

Bug: 364634028
Change-Id: I709ed9765ee78ed35983384b0a472071a3cee4ea
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/74713
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
diff --git a/crypto/x509/x_spki.cc b/crypto/x509/x_spki.cc
index b1bac06..8c7fcb0 100644
--- a/crypto/x509/x_spki.cc
+++ b/crypto/x509/x_spki.cc
@@ -7,9 +7,6 @@
  * https://www.openssl.org/source/license.html
  */
 
-// This module was send to me my Pat Richards <patr@x509.com> who wrote it.
-// It is under my Copyright with his permission.
-
 #include <openssl/asn1t.h>
 #include <openssl/x509.h>