Remove unused rosdep prereqs files

Author: Francisco Rossi

bazel_ros2_rules/lib/private/repos.bzl

@@ -117,20 +117,6 @@ def base_ros2_repository(repo_ctx, workspaces):
     if result.stderr:
         print(result.stderr)
 
-    repo_ctx.report_progress("Generating system-rosdep-keys.txt")
-    path_to_compute_system_rosdeps_tool = repo_ctx.path(
-        repo_ctx.attr._compute_system_rosdeps_tool,
-    )
-    cmd = [
-        "./run.bash",
-        str(path_to_compute_system_rosdeps_tool),
-        "distro_metadata.json",
-    ]
-    cmd.extend(["-o", "system-rosdep-keys.txt"])
-    result = execute_or_fail(repo_ctx, cmd, quiet = True)
-    if result.stderr:
-        print(result.stderr)
-
 def _label(relpath):
     return Label("//lib/private:" + relpath)
 
@@ -187,11 +173,6 @@ def base_ros2_repository_attributes():
             doc = "Tool to generate BUILD.bazel file from distribution " +
                   "metadata.",
         ),
-        "_compute_system_rosdeps_tool": attr.label(
-            default = _label("scripts/compute_system_rosdeps.py"),
-            doc = "Tool to compute system rosdep keys for target " +
-                  "distribution.",
-        ),
         "allowed_system_libs": attr.string_list(
             doc = "Optional list of regular expressions (strings) that " +
                   "will be added to the scraping tool's allowed system libs " +

bazel_ros2_rules/lib/private/scripts/compute_system_rosdeps.py

@@ -5,5 +5,3 @@ load(":common.bzl", "interfaces_filegroup", "share_filegroup")
 load(":ros_py.bzl", "ros_import_binary")
 
 package(default_visibility = ["//visibility:public"])
-
-exports_files(["system-rosdep-keys.txt"])

bazel_ros2_rules/lib/private/templates/prologue.bazel

@@ -11,22 +11,6 @@ load(
     "ros_py_test",
 )
 load("@rules_python//python:defs.bzl", "py_library", "py_test")
-load("//tools:cmd_test.bzl", "cmd_test")
-
-# TODO(hidmic): make linter more user-friendly
-cmd_test(
-    name = "lint_rosdeps",
-    cmd = [
-        "diff",
-        "-u",
-        "setup/prereq-rosdep-keys.txt",
-        "$(location @ros2//:system-rosdep-keys.txt)",
-    ],
-    data = [
-        "setup/prereq-rosdep-keys.txt",
-        "@ros2//:system-rosdep-keys.txt",
-    ],
-)
 
 ros_cc_test(
     name = "runfiles_cc_test",