Fix Python 3.6.15 build

plugins/python-build/share/python-build/3.6.15

@@ -1,6 +1,5 @@
 #require_gcc
 prefer_openssl11
-export PYTHON_BUILD_CONFIGURE_WITH_OPENSSL=1
 install_package "openssl-1.1.1k" "https://www.openssl.org/source/openssl-1.1.1k.tar.gz#892a0875b9872acd04a9fde79b1f943075d5ea162415de3047c327df33fbaee5" mac_openssl --if has_broken_mac_openssl
 install_package "readline-8.1" "https://ftpmirror.gnu.org/readline/readline-8.1.tar.gz#f8ceb4ee131e3232226a17f51b164afc46cd0b9e6cef344be87c65962cb82b02" mac_readline --if has_broken_mac_readline
 if has_tar_xz_support; then