Remove 'main' attr from reference. Still unstable.
@@ -96,8 +96,6 @@ type int8_t = i8;
## Function-only attributes
-- `main` - indicates that this function should be passed to the entry point,
- rather than the function in the crate root named `main`.
- `test` - indicates that this function is a test function, to only be compiled
in case of `--test`.
- `ignore` - indicates that this test function is disabled.
