Drop CECPQ2b code.

The experiment which motivated CECPQ2b has concluded (although the
results haven't been published yet) and the SIKE code is causing some
issues for gRPC in gprc/grpc#20100. Also, this is code size that takes
up space in Android etc.

Change-Id: I43b0b8c420f236c0fe9b40bf2517d2fde98495d5
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/38384
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
diff --git a/util/generate_build_files.py b/util/generate_build_files.py
index 8a5df75..6bd3abc 100644
--- a/util/generate_build_files.py
+++ b/util/generate_build_files.py
@@ -640,8 +640,7 @@
 def main(platforms):
   cmake = ExtractVariablesFromCMakeFile(os.path.join('src', 'sources.cmake'))
   crypto_c_files = (FindCFiles(os.path.join('src', 'crypto'), NoTestsNorFIPSFragments) +
-                    FindCFiles(os.path.join('src', 'third_party', 'fiat'), NoTestsNorFIPSFragments) +
-                    FindCFiles(os.path.join('src', 'third_party', 'sike'), NoTestsNorFIPSFragments))
+                    FindCFiles(os.path.join('src', 'third_party', 'fiat'), NoTestsNorFIPSFragments))
   fips_fragments = FindCFiles(os.path.join('src', 'crypto', 'fipsmodule'), OnlyFIPSFragments)
   ssl_source_files = FindCFiles(os.path.join('src', 'ssl'), NoTests)
   tool_c_files = FindCFiles(os.path.join('src', 'tool'), NoTests)
@@ -721,8 +720,7 @@
   ssl_internal_h_files = FindHeaderFiles(os.path.join('src', 'ssl'), NoTests)
   crypto_internal_h_files = (
       FindHeaderFiles(os.path.join('src', 'crypto'), NoTests) +
-      FindHeaderFiles(os.path.join('src', 'third_party', 'fiat'), NoTests) +
-      FindHeaderFiles(os.path.join('src', 'third_party', 'sike'), NoTests))
+      FindHeaderFiles(os.path.join('src', 'third_party', 'fiat'), NoTests))
 
   files = {
       'bcm_crypto': bcm_crypto_c_files,