fix(core): remove stale tool_supports_subagents and tool_supports_agent_teams config (#1827)

These config keys were added in efc69ffb but never consumed by any
template, conditional logic, or runtime code. They represent platform
capabilities that the agent can determine at runtime — persisting a
stale user guess adds installation friction with zero execution value.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

src/core/module.yaml

@@ -23,13 +23,3 @@ output_folder:
   prompt: "Where should output files be saved?"
   default: "_bmad-output"
   result: "{project-root}/{value}"
-
-tool_supports_subagents:
-  prompt: "Subagents are supported by the LLM or Tool I will be using?"
-  default: true
-  result: "{value}"
-
-tool_supports_agent_teams:
-  prompt: "Agent Teams are supported by the LLM or Tool I will be using?"
-  default: false
-  result: "{value}"