Translation cleanup

ui-ngx/src/assets/locale/locale.constant-en_US.json

@@ -4964,7 +4964,6 @@
         "endpoint-url-pattern": "Endpoint URL pattern",
         "endpoint-url-pattern-required": "Endpoint URL pattern is required",
         "request-method": "Request method",
-        "use-simple-client-http-factory": "Use simple client HTTP factory",
         "ignore-request-body": "Without request body",
         "parse-to-plain-text": "Parse to plain text",
         "parse-to-plain-text-hint": "If selected, request body message payload will be transformed from JSON string to plain text, e.g. msg = \"Hello,\\t\"world\"\" will be parsed to Hello, \"world\"",
@@ -5120,7 +5119,6 @@
         "proxy-port-range": "Proxy port should be in a range from 1 to 65535.",
         "proxy-user": "Proxy user",
         "proxy-password": "Proxy password",
-        "proxy-scheme": "Proxy scheme",
         "numbers-to-template": "Phone Numbers To Template",
         "numbers-to-template-required": "Phone Numbers To Template is required",
         "numbers-to-template-hint": "Comma separated Phone Numbers, use <code><span style=\"color: #000;\">$&#123;</span>metadataKey<span style=\"color: #000;\">&#125;</span></code> for value from metadata, <code><span style=\"color: #000;\">$[</span>messageKey<span style=\"color: #000;\">]</span></code> for value from message body",