Delete useless rules dependency in lit

Author: lucic71

tests/lit/lit/formats/Cpp2RustTest.py

@@ -156,7 +156,6 @@ def fail(str, code = fail_code):
 [dependencies]
 libc = "0.2.169"
 libcc2rs = {{ path = "../../../libcc2rs" }}
-rules = {{ path = "../../../rules" }}
 """)
 
     cmd = ['cargo', 'build', '--release', '--quiet']