Remove unnecessary comments from create_tool_calls_migration.rb

Addresses PR feedback to remove redundant comments from the migration template.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: kieranklaassen

lib/generators/ruby_llm/install/templates/create_tool_calls_migration.rb

@@ -4,8 +4,6 @@
 class CreateToolCalls < ActiveRecord::Migration<%= migration_version %>
   def change
     create_table :tool_calls do |t|
-      # No reference to message to avoid circular references
-      # Messages will reference tool_calls, not the other way around
       t.string :tool_call_id, null: false
       t.string :name, null: false