target-spec: remove legacy_target_specs dep

Author: Firestar99

Cargo.toml

@@ -33,9 +33,6 @@ cargo-util-schemas = "0.8.2"
 semver = "1.0.26"
 dunce = "1.0.5"
 
-# This crate MUST NEVER be upgraded, we need this particular "first" version to support old rust-gpu builds
-legacy_target_specs = { package = "rustc_codegen_spirv-target-specs", version = "0.9.0", features = ["include_str"] }
-
 [workspace.lints.rust]
 missing_docs = "warn"
 

crates/cargo-gpu/Cargo.toml

@@ -14,7 +14,6 @@ default-run = "cargo-gpu"
 cargo_metadata.workspace = true
 anyhow.workspace = true
 spirv-builder = { workspace = true, features = ["clap", "watch"] }
-legacy_target_specs.workspace = true
 clap.workspace = true
 directories.workspace = true
 env_logger.workspace = true