gnu: Remove rust-terminfo-0.6.

* gnu/packages/crates-io.scm (rust-terminfo-0.6): Delete variable.

gnu/packages/crates-io.scm

@@ -60885,27 +60885,6 @@ writing colored text to a terminal.")
     (description "Terminal capabilities with type-safe getters.")
     (license license:wtfpl2)))
 
-(define-public rust-terminfo-0.6
-  (package
-    (inherit rust-terminfo-0.7)
-    (name "rust-terminfo")
-    (version "0.6.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "terminfo" version))
-       (file-name
-        (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32
-         "17k8vqvicd6yg0iqmkjnxjhz8h8pknv86r03nq3f3ayjmxdhclcf"))))
-    (arguments
-     `(#:cargo-inputs
-       (("rust-fnv" ,rust-fnv-1)
-        ("rust-nom" ,rust-nom-4)
-        ("rust-phf" ,rust-phf-0.7)
-        ("rust-phf-codegen" ,rust-phf-codegen-0.7))))))
-
 (define-public rust-termion-1
   (package
     (name "rust-termion")