Remove USE_SSL support

tls-proxy is the way we're now doing a standard install using https
between services. There is a lot more work to make services directly
handle https, and having python daemons do that directly is a bit of
an anti pattern. Nothing currently tests this in project-config from
my recent grepping, so in the interest of long term maintenance,
delete it all.

Change-Id: I910df4ceab6f24f3d9c484e0433c93b06f17d6e1
diff --git a/stack.sh b/stack.sh
index 759a8db..635a328 100755
--- a/stack.sh
+++ b/stack.sh
@@ -539,13 +539,6 @@
 source $TOP_DIR/lib/database
 source $TOP_DIR/lib/rpc_backend
 
-# Service to enable with SSL if ``USE_SSL`` is True
-SSL_ENABLED_SERVICES="key,nova,cinder,glance,s-proxy,neutron"
-
-if is_service_enabled tls-proxy && [ "$USE_SSL" == "True" ]; then
-    die $LINENO "tls-proxy and SSL are mutually exclusive"
-fi
-
 # Configure Projects
 # ==================
 
@@ -806,7 +799,7 @@
 fi
 
 # Setup TLS certs
-if is_service_enabled tls-proxy || [ "$USE_SSL" == "True" ]; then
+if is_service_enabled tls-proxy; then
     configure_CA
     init_CA
     init_cert
@@ -886,7 +879,7 @@
     stack_install_service horizon
 fi
 
-if is_service_enabled tls-proxy || [ "$USE_SSL" == "True" ]; then
+if is_service_enabled tls-proxy; then
     fix_system_ca_bundle_path
 fi