Keep .tampy files - never delete user source

src/tampy/cli.py

@@ -1,7 +1,6 @@
 import argparse
 import subprocess
 import sys
-import os
 from pathlib import Path
 
 from .transpiler import transpile
@@ -49,10 +48,6 @@ def main():
             print(result.stderr, file=sys.stderr)
             sys.exit(result.returncode)
 
-    # Delete original if not --save
-    if not args.save and not args.build:
-        file_path.unlink()
-
 
 if __name__ == "__main__":
     main()