gnu: go-golang-org-x-time: Simplify.

* gnu/packages/golang-build.scm (go-golang-org-x-time):
[arguments] <skip-build?>: Set to #t, as no go files in project's root.
<phases>: Use default 'check.

Change-Id: I533cc20e9ba1be1ee754dd7fa36b9547d4bda9b6

gnu/packages/golang-build.scm

@@ -969,17 +969,8 @@ processing.")
     (build-system go-build-system)
     (arguments
      (list
-      #:import-path "golang.org/x/time"
-      #:phases
-      #~(modify-phases %standard-phases
-          ;; XXX: Workaround for go-build-system's lack of Go modules
-          ;; support.
-          (delete 'build)
-          (replace 'check
-            (lambda* (#:key tests? import-path #:allow-other-keys)
-              (when tests?
-                (with-directory-excursion (string-append "src/" import-path)
-                  (invoke "go" "test" "-v" "./..."))))))))
+      #:skip-build? #t
+      #:import-path "golang.org/x/time"))
     (home-page "https://godoc.org/golang.org/x/time/rate")
     (synopsis "Supplemental Go time libraries")
     (description