Revert "Add the config needed to get rust-analyzer working on src/bootstrap (rust-lang#1381)"

This reverts commit d955bab.

Author: spastorino

Diff for: src/building/suggested.md

@@ -45,10 +45,6 @@ you can write: <!-- date: 2022-04 --><!-- the date comment is for the edition be
         "--json-output"
     ],
     "rust-analyzer.rustc.source": "./Cargo.toml",
-    "rust-analyzer.linkedProjects": [
-        "Cargo.toml",
-        "src/bootstrap/Cargo.toml"
-    ]
 }
 ```