Revert "Add cart's fork of ecs_bench_suite (#4225)" (#4252)

This reverts commit 08ef2f0.

# Objective

- #4225 was merged without considering the licensing considerations.
- It merges in code taken from https://github.com/cart/ecs_bench_suite/tree/bevy-benches/src/bevy.
- We can safely assume that we do have a license to cart's contributions. However, these build upon cart/ecs_bench_suite@377e96e, for which we have no license. 
- This has been verified by looking in the Cargo.toml, the root folder and the readme, none of which mention a license. Additionally, the string "license" [doesn't appear](https://github.com/rust-gamedev/ecs_bench_suite/search?q=license) in the repository.
- This means the code is all rights reserved.
- (The author of these commits also hasn't commented in #2373, though even if they had, it would be legally *dubious* to rely on that to license any code they ever wrote)
- (Note that the latest commit on the head at https://github.com/rust-gamedev/ecs_bench_suite hasn't had a license added either.)
- We are currently incorrectly claiming to be able to give an MIT/Apache 2.0 license to this code.

## Solution

- Revert it

benches/Cargo.toml

@@ -7,16 +7,10 @@ publish = false
 license = "MIT OR Apache-2.0"
 
 [dev-dependencies]
-glam = "0.20"
 criterion = "0.3"
 bevy_ecs = { path = "../crates/bevy_ecs" }
 bevy_tasks = { path = "../crates/bevy_tasks" }
 
-[[bench]]
-name = "ecs_bench_suite"
-path = "benches/bevy_ecs/ecs_bench_suite/mod.rs"
-harness = false
-
 [[bench]]
 name = "system_stage"
 path = "benches/bevy_ecs/stages.rs"