Remove check_missing_items.py

Author: aDotInTheVoid

src/etc/check_missing_items.py

@@ -2563,15 +2563,6 @@ impl<'test> TestCx<'test> {
 
         let mut json_out = out_dir.join(self.testpaths.file.file_stem().unwrap());
         json_out.set_extension("json");
-        let res = self.cmd2procres(
-            Command::new(&self.config.python)
-                .arg(root.join("src/etc/check_missing_items.py"))
-                .arg(&json_out),
-        );
-
-        if !res.status.success() {
-            self.fatal_proc_rec("check_missing_items failed!", &res);
-        }
 
         let res = self.cmd2procres(
             Command::new(self.config.jsondoclint_path.as_ref().unwrap()).arg(&json_out),

src/tools/compiletest/src/runtest.rs

@@ -130,7 +130,6 @@ trigger_files = [
 
     # Internal tooling
     "src/etc/htmldocck.py",
-    "src/etc/check_missing_items.py",
     "src/tools/jsondocck",
     "src/tools/jsondoclint",
     "src/tools/rustdoc-gui",
@@ -143,7 +142,6 @@ exclude_labels = [
 
 [autolabel."A-rustdoc-json"]
 trigger_files = [
-    "src/etc/check_missing_items.py",
     "src/librustdoc/json/",
     "src/rustdoc-json-types",
     "src/test/rustdoc-json",