Get rid of bazel.

Good riddance. More of a headache than it's worth.

sbuf/BUILD.bazel

@@ -1,16 +0,0 @@
-load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
-
-go_library(
-    name = "sbuf",
-    srcs = ["sbuf.go"],
-    importpath = "git.wntrmute.dev/kyle/goutils/sbuf",
-    visibility = ["//visibility:public"],
-)
-
-go_test(
-    name = "sbuf_test",
-    size = "small",
-    srcs = ["sbuf_test.go"],
-    embed = [":sbuf"],
-    deps = ["@org_golang_x_crypto//nacl/box"],
-)