fix : remove _{ } syntax from benchmark macro (#7822)

* commented use of common

* hack to pass tests

* another hack

* remove all commented code

* fix the easy tests

* temp hack

* follow through comma hack until better solution

* patch macro

* missed one

* update benchmarks

* update docs

* fix docs

* removed too much

* fix changes

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

Author: stanly-johnson

src/benchmarking.rs

@@ -113,8 +113,6 @@ pub fn create_validator_with_nominators<T: Config>(
 const USER_SEED: u32 = 999666;
 
 benchmarks! {
-	_{}
-
 	bond {
 		let stash = create_funded_user::<T>("stash", USER_SEED, 100);
 		let controller = create_funded_user::<T>("controller", USER_SEED, 100);