storage: remove gRPC TLS certificates.

Change-Id: I18cb5b18b232c8c1ec2e6396ce8c055ae1a114ec
Reviewed-on: https://code-review.googlesource.com/c/gocloud/+/44134
Reviewed-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jean de Klerk <deklerk@google.com>
diff --git a/storage/internal/benchwrapper/cert/server.key b/storage/internal/benchwrapper/cert/server.key
deleted file mode 100644
index 144ee0a..0000000
--- a/storage/internal/benchwrapper/cert/server.key
+++ /dev/null
@@ -1,27 +0,0 @@
------BEGIN RSA PRIVATE KEY-----
-MIIEpQIBAAKCAQEApJXna2sjwf0AV9N6rVDpWnZ/ZWsxcs4j8flrn6CwLfIURG6E
-ctQQkFCxQZWZ+M6EESzd1U/wSCRXB6Gv7tJMASlfiswy/eFcm8rX88/c94puZlll
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-voWEWfEBGpwUQ/ArX1J/32avLP4ciI5B3GTxtQIDAQABAoIBAQCbs1CVt2rBhwY/
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-0E+2BCtyjlVJxXk0BgOx7NqN2yTjQwEsBANfQuBLMIFFDNvjA/EL89ywN/p/B8uk
-FbogREkWcdm2FCZvfF/YZcttAoGBAJTxG6VkSHYqgs+XHMewLxJGtZahsfw9cNeE
-ZGzTsaDIe2ZK1GrXdLM+no3pNQIDfpU52DxUhYF1vpKm2WvhHzjpPraBjGJyGXCm
-2PVhZtCVuEdtSY+8cXnB0Sp4o3uLbGKsEfNt49DCx8WdoEHHjLNI80yJ8v9bZmT8
-Roc4M9OhAoGAKNyqyXuKH5jPjklYQieC21b2AoE7P/vnW28YXkKw6QP9Mq9zuDAt
-U8dmtsNCLnPjcU4DMeAF50Nv6jla2xI07G9t3dNqH164T+2mvESL8g10mfpWcC9E
-EXDINK0yHq8Yxxzce/IlEUdBhwc331MEMVye09XxiF2tla5Agl0HFSc=
------END RSA PRIVATE KEY-----
diff --git a/storage/internal/benchwrapper/cert/server.pem b/storage/internal/benchwrapper/cert/server.pem
deleted file mode 100644
index a90b80b..0000000
--- a/storage/internal/benchwrapper/cert/server.pem
+++ /dev/null
@@ -1,19 +0,0 @@
------BEGIN CERTIFICATE-----
-MIIDIzCCAgugAwIBAgIUcjEcAhzPqcDU5qIqpggmZtCbyc4wDQYJKoZIhvcNAQEL
-BQAwITELMAkGA1UEBhMCVVMxEjAQBgNVBAMMCWxvY2FsaG9zdDAeFw0xOTA3MzEy
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-/hXunuqm1zOvSMWUBCujyQgzHub9qz/3nvh7cWuoiTTdA9qlm9OnnPPc+0vucWqw
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-yJqgwdJQysUBy4NxPDwbo9mLc0eZ2xoh0l2KYASCVfYsvdYD/1MTouuBVj56RzNC
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-2Mso3N//8UfGdvqtGQ1U3Dtxa0ZbhsAsxQrBcwnX7xe3fi3EGS+G
------END CERTIFICATE-----