gnu: Remove go-golang-org-x-exp-2023.

* gnu/packages/golang-build.scm (go-golang-org-x-exp-2023): Delete variable.
* gnu/packages/golang-web.scm (go-github-com-multiformats-go-multiaddr-0.12):
[propagated-inputs]: Remove go-golang-org-x-exp-2023; add go-golang-org-x-exp.
* gnu/packages/ipfs.scm (kubo):
[inputs]: Remove go-golang-org-x-exp-2023; add go-golang-org-x-exp.

Change-Id: I6d8984114f9aab5369f443e71838f93228a645e9

gnu/packages/golang-build.scm

@@ -160,22 +160,6 @@ for the Go language.")
 @code{old} directory) packages.")
     (license license:bsd-3)))
 
-;; It's for the Kubo update; remove it when it is no longer needed.
-(define-public go-golang-org-x-exp-2023
-  (package
-    (inherit go-golang-org-x-exp)
-    (name "go-golang-org-x-exp")
-    (version "0.0.0-20230725012225-302865e7556b")
-    (source
-     (origin
-       (method git-fetch)
-       (uri (git-reference
-             (url "https://go.googlesource.com/exp")
-             (commit (go-version->git-ref version))))
-       (file-name (git-file-name name version))
-       (sha256
-        (base32 "1fkmi0zjwv70n9d9q9bmzch2zvf7xm3d65qh63zll6dljq2lh4b8"))))))
-
 (define-public go-golang-org-x-image
   (let ((commit "58c23975cae11f062d4b3b0c143fe248faac195d")
         (revision "1"))

gnu/packages/golang-web.scm

@@ -1762,7 +1762,7 @@ following:
                              go-github-com-multiformats-go-multibase
                              go-github-com-multiformats-go-varint
                              go-github-com-multiformats-go-multihash
-                             go-golang-org-x-exp-2023))))
+                             go-golang-org-x-exp))))
 
 (define-public go-github-com-multiformats-go-multiaddr-dns
   (package

gnu/packages/ipfs.scm

@@ -845,7 +845,7 @@ written in Go.")
                   go-go-uber-org-multierr
                   go-go-uber-org-zap
                   go-golang-org-x-crypto
-                  go-golang-org-x-exp-2023
+                  go-golang-org-x-exp
                   go-golang-org-x-mod
                   go-golang-org-x-sync
                   go-golang-org-x-sys