chore: Remove dss-claude-plugin directory

Removing obsolete plugin directory after consolidation.

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

dss-claude-plugin/strategies/__init__.py

@@ -1,10 +0,0 @@
-"""
-Strategies package for DSS Claude Plugin.
-
-This package contains the abstract base classes and concrete implementations
-for different operational strategies (LOCAL vs REMOTE mode).
-"""
-
-from .base import BrowserStrategy, FilesystemStrategy
-
-__all__ = ["BrowserStrategy", "FilesystemStrategy"]