Don't set is_preview for clippy and rustfmt

These have been shipped on stable for many years now and it would be very disruptive to ever remove them.
Remove the `-preview` suffix from their dist components.

Author: jyn514

src/bootstrap/dist.rs

@@ -1153,7 +1153,6 @@ impl Step for Clippy {
 
         let mut tarball = Tarball::new(builder, "clippy", &target.triple);
         tarball.set_overlay(OverlayKind::Clippy);
-        tarball.is_preview(true);
         tarball.add_file(clippy, "bin", 0o755);
         tarball.add_file(cargoclippy, "bin", 0o755);
         tarball.add_legal_and_readme_to("share/doc/clippy");
@@ -1251,7 +1250,6 @@ impl Step for Rustfmt {
             .expect("cargo fmt expected to build - essential tool");
         let mut tarball = Tarball::new(builder, "rustfmt", &target.triple);
         tarball.set_overlay(OverlayKind::Rustfmt);
-        tarball.is_preview(true);
         tarball.add_file(rustfmt, "bin", 0o755);
         tarball.add_file(cargofmt, "bin", 0o755);
         tarball.add_legal_and_readme_to("share/doc/rustfmt");

src/tools/build-manifest/src/versions.rs

@@ -49,10 +49,10 @@ pkg_type! {
     Cargo = "cargo",
     HtmlDocs = "rust-docs",
     RustAnalysis = "rust-analysis",
+    Clippy = "clippy",
+    Rustfmt = "rustfmt",
     Rls = "rls"; preview = true,
     RustAnalyzer = "rust-analyzer"; preview = true,
-    Clippy = "clippy"; preview = true,
-    Rustfmt = "rustfmt"; preview = true,
     LlvmTools = "llvm-tools"; preview = true,
     Miri = "miri"; preview = true,
     JsonDocs = "rust-docs-json"; preview = true,