change: removed the openssl 1.0.2 in CI since it has been EOL ove a year, fix #1897. (#1899)

Author: doujiang

.travis.yml

@@ -47,8 +47,6 @@ env:
     - DRIZZLE_VER=2011.07.21
     - TEST_NGINX_SLEEP=0.006
   jobs:
-    - NGINX_VERSION=1.17.8 OPENSSL_VER=1.0.2u OPENSSL_PATCH_VER=1.0.2h
-    - NGINX_VERSION=1.19.9 OPENSSL_VER=1.0.2u OPENSSL_PATCH_VER=1.0.2h
     - NGINX_VERSION=1.19.9 OPENSSL_VER=1.1.0l OPENSSL_PATCH_VER=1.1.0d
     - NGINX_VERSION=1.19.9 OPENSSL_VER=1.1.1k OPENSSL_PATCH_VER=1.1.1f