depend-o-pocalipse (#9450)

Remove unneeded dependencies and dev-dependencies.
Made self_destruct test not dependent on wasm bin size.  
Updated code related to deprecated warning on tracing-subscriber `scope()` 
( See https://github.com/tokio-rs/tracing/issues/1429 )

substrate/frame/elections-phragmen/src/lib.rs

@@ -679,8 +679,9 @@ pub mod pallet {
 					// election.
 					Members::<T>::mutate(|members| {
 						match members.binary_search_by(|m| m.who.cmp(member)) {
-							Ok(_) =>
-								panic!("Duplicate member in elections-phragmen genesis: {}", member),
+							Ok(_) => {
+								panic!("Duplicate member in elections-phragmen genesis: {}", member)
+							},
 							Err(pos) => members.insert(
 								pos,
 								SeatHolder {