gnu: Remove rust-onig-sys-69.2.

* gnu/packages/crates-io.scm (rust-onig-sys-69.2): Delete variable.

gnu/packages/crates-io.scm

@@ -37295,25 +37295,6 @@ (define-public rust-onig-sys-69.6
 other crates to create safe wrappers around Oniguruma.")
     (license license:expat)))
 
-(define-public rust-onig-sys-69.2
-  (package
-    (inherit rust-onig-sys-69.6)
-    (name "rust-onig-sys")
-    (version "69.2.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "onig_sys" version))
-       (file-name (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32 "0kjijq29yx05xxg9snvqnfn53dl52hchb4sk3zhfr77mypxlx38a"))))
-    (arguments
-     `(#:skip-build? #t
-       #:cargo-inputs
-       (("rust-bindgen" ,rust-bindgen-0.50)
-        ("rust-cc" ,rust-cc-1)
-        ("rust-pkg-config" ,rust-pkg-config-0.3))))))
-
 (define-public rust-once-cell-1
   (package
     (name "rust-once-cell")