Get rid of bazel.

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

cmd/sprox/BUILD.bazel

@@ -1,15 +0,0 @@
-load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
-
-go_library(
-    name = "sprox_lib",
-    srcs = ["main.go"],
-    importpath = "git.wntrmute.dev/kyle/goutils/cmd/sprox",
-    visibility = ["//visibility:private"],
-    deps = ["//die"],
-)
-
-go_binary(
-    name = "sprox",
-    embed = [":sprox_lib"],
-    visibility = ["//visibility:public"],
-)