stabilize abi_thiscall

Author: Trolldemorted

Diff for: crates/ide-db/src/generated/lints.rs

@@ -928,22 +928,6 @@ $ cat $(find -name '*.s')
         ret;
 }
 ```
-"##,
-    },
-    Lint {
-        label: "abi_thiscall",
-        description: r##"# `abi_thiscall`
-
-The tracking issue for this feature is: [#42202]
-
-[#42202]: https://github.com/rust-lang/rust/issues/42202
-
-------------------------
-
-The MSVC ABI on x86 Windows uses the `thiscall` calling convention for C++
-instance methods by default; it is identical to the usual (C) calling
-convention on x86 Windows except that the first parameter of the method,
-the `this` pointer, is passed in the ECX register.
 "##,
     },
     Lint {