delete no longer used file (#476)

oracle/src/default_weight.rs

-//! THIS FILE WAS AUTO-GENERATED USING THE SUBSTRATE BENCHMARK CLI VERSION 2.0.0
-
-#![allow(unused_parens)]
-#![allow(unused_imports)]
-#![allow(clippy::unnecessary_cast)]
-
-use frame_support::weights::{constants::RocksDbWeight as DbWeight, Weight};
-
-impl crate::WeightInfo for () {
-	fn feed_values(c: u32) -> Weight {
-		(74_792_000 as Weight)
-			.saturating_add((11_208_000 as Weight).saturating_mul(c as Weight))
-			.saturating_add(DbWeight::get().reads(3 as Weight))
-			.saturating_add(DbWeight::get().writes(1 as Weight))
-			.saturating_add(DbWeight::get().writes((2 as Weight).saturating_mul(c as Weight)))
-	}
-	fn on_finalize() -> Weight {
-		(15_881_000 as Weight).saturating_add(DbWeight::get().writes(1 as Weight))
-	}
-}