Update README.md

remove sync commands from cli examples

Signed-off-by: Paul Hernandez <60959+phernandez@users.noreply.github.com>

Author: phernandez

README.md

@@ -416,10 +416,6 @@ structured responses. Full tool reference in the
 ## CLI essentials
 
 ```bash
-# Sync
-basic-memory sync                # one-time sync
-basic-memory sync --watch        # real-time
-
 # Projects
 basic-memory project list
 basic-memory project add research ~/research