Remove redundant test files

Delete 5 test files that duplicated coverage from other tests:
- test_simple_memory_access.py (2 tests) - covered by test_behavioral_compatibility
- test_write_operations.py (1 test) - covered by multiple integration tests
- test_address_parsing.py (4 tests) - covered by test_native_all_methods
- test_native_server_client.py (8 tests) - covered by test_native_integration_full
- test_integration.py (7 tests) - covered by test_api_compatibility

Reduces test files from 18 to 13 while maintaining full coverage.

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

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: gijzelaerr