Update x/tools repository to v0.1.8 bazel-contrib#3030 (bazel-contrib…

…#3031)

Ran the following commands:

bazel build go/tools/releaser
sed -i /org_golang_x_tools-public-visibility.patch/d go/private/repositories.bzl
rm third_party/org_golang_x_tools-public-visibility.patch
bazel-bin/go/tools/releaser/releaser_/releaser upgrade-dep org_golang_x_tools

go/private/repositories.bzl

@@ -75,21 +75,20 @@ def go_rules_dependencies(is_rules_go = False):
     _maybe(
         http_archive,
         name = "org_golang_x_tools",
-        # v0.1.7, latest as of 2021-10-06
+        # v0.1.8, latest as of 2021-12-15
         urls = [
-            "https://mirror.bazel.build/github.com/golang/tools/archive/v0.1.7.zip",
-            "https://github.com/golang/tools/archive/v0.1.7.zip",
+            "https://mirror.bazel.build/github.com/golang/tools/archive/v0.1.8.zip",
+            "https://github.com/golang/tools/archive/v0.1.8.zip",
         ],
-        sha256 = "c069fd1d1dcbbfd2e396993307adf0edde5ef5d419c5db92649ab8cfabec255e",
-        strip_prefix = "tools-0.1.7",
+        sha256 = "aec8a9ade0974bafc290bad1c53fa2b4d2b87ac8a90bf5340ded216ff81d1b2a",
+        strip_prefix = "tools-0.1.8",
         patches = [
             # deletegopls removes the gopls subdirectory. It contains a nested
             # module with additional dependencies. It's not needed by rules_go.
             # releaser:patch-cmd rm -rf gopls
             "@io_bazel_rules_go//third_party:org_golang_x_tools-deletegopls.patch",
             # releaser:patch-cmd gazelle -repo_root . -go_prefix golang.org/x/tools -go_naming_convention import_alias
             "@io_bazel_rules_go//third_party:org_golang_x_tools-gazelle.patch",
-            "@io_bazel_rules_go//third_party:org_golang_x_tools-public-visibility.patch",
         ],
         patch_args = ["-p1"],
     )