[gcc r16-2817] Rust: Move 'libformat_parser' build into the GCC build directory

[Arthur Cohen via Gcc-cvs]

https://gcc.gnu.org/g:e66defecdb27dcdf6cc8c9cab60ea063f2f2192f

commit r16-2817-ge66defecdb27dcdf6cc8c9cab60ea063f2f2192f
Author: Thomas Schwinge <tschwi...@baylibre.com>
Date:   Wed Feb 28 23:26:39 2024 +0100

    Rust: Move 'libformat_parser' build into the GCC build directory
    
    Fixes Rust-GCC#2883.
    
            * .gitignore: Remove 'libgrust/*/target/'.

Diff:
---
 .gitignore | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/.gitignore b/.gitignore
index 7150fc3b29ca..f044fe16b5f6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -71,6 +71,3 @@ stamp-*
 /gmp*
 /isl*
 /gettext*
-
-# ADDITIONS from GCCRS front-end
-libgrust/*/target/