[Rust/sib] Mark as stripped

[p8]

Sib hardcodes HTTP headers, so it should be marked as stripped:

FrameworkBenchmarks/frameworks/Rust/sib/src/main.rs

Lines 34 to 39 in d36a2ed

	"HTTP/1.1 200 OK\r\n\
	Server: sib\r\n\
	Date: {}\r\n\
	Content-Type: application/json\r\n\
	Content-Length: {}\r\n\
	\r\n\

From the Test Requirements:

All implementations are expected (but not required) to be based on robust implementations of the HTTP protocol. Implementations that are not based on a realistic HTTP implementation will be marked as Stripped.

[joanhey]

FrameworkBenchmarks/frameworks/Rust/sib/src/main.rs

Lines 49 to 59 in d36a2ed

	write!(
	res,
	"HTTP/1.1 200 OK\r\n\
	Server: sib\r\n\
	Date: {}\r\n\
	Content-Type: text/plain\r\n\
	Content-Length: 13\r\n\
	\r\n\
	Hello, World!",
	h1_session::CURRENT_DATE.load()
	)