Removed useless try/except

lightrag/kg/neo4j_impl.py

@@ -23,7 +23,6 @@ import pipmaster as pm
 if not pm.is_installed("neo4j"):
     pm.install("neo4j")
 
-try:
 from neo4j import (
     AsyncGraphDatabase,
     exceptions as neo4jExceptions,
@@ -31,10 +30,6 @@ try:
     AsyncManagedTransaction,
     GraphDatabase,
 )
-except ImportError as e:
-    raise ImportError(
-        "`neo4j` library is not installed. Please install it via pip: `pip install neo4j`."
-    ) from e
 
 config = configparser.ConfigParser()
 config.read("config.ini", "utf-8")