remove duplicates that make bazel unhappy

Change-Id: I690f56f2164936b005b672f896858b027a79c011
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/61745
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Bob Beck <bbe@google.com>
Auto-Submit: Bob Beck <bbe@google.com>

sources.cmake

diff --git a/sources.cmake b/sources.cmake
index 466ab49..cb8fbfa 100644
--- a/sources.cmake
+++ b/sources.cmake
@@ -346,7 +346,6 @@
   pki/cert_error_id.cc
   pki/cert_error_params.cc
   pki/cert_errors.cc
-  pki/cert_errors.cc
   pki/cert_issuer_source_static.cc
   pki/certificate_policies.cc
   pki/common_cert_errors.cc
@@ -362,12 +361,9 @@
   pki/input.cc
   pki/name_constraints.cc
   pki/parse_certificate.cc
-  pki/parse_certificate.cc
   pki/parse_name.cc
   pki/parse_values.cc
   pki/parsed_certificate.cc
-  pki/parsed_certificate.cc
-  pki/parsed_certificate.cc
   pki/parser.cc
   pki/path_builder.cc
   pki/pem.cc
@@ -377,10 +373,8 @@
   pki/string_util.cc
   pki/tag.cc
   pki/trust_store_collection.cc
-  pki/trust_store_collection.cc
   pki/trust_store_in_memory.cc
   pki/trust_store.cc
-  pki/trust_store.cc
   pki/verify_certificate_chain.cc
   pki/verify_name_match.cc
   pki/verify_signed_data.cc