Drop unused runfiles dep from assembly-info generators

Neither script imports runfiles; they are plain `argparse`.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Author: redsun82

misc/bazel/csharp/BUILD.bazel

@@ -3,14 +3,12 @@ load("@rules_python//python:defs.bzl", "py_binary")
 py_binary(
     name = "gen-git-assembly-info",
     srcs = ["gen-git-assembly-info.py"],
-    deps = ["@rules_python//python/runfiles"],
 )
 
 py_binary(
     name = "gen-assembly-info",
     srcs = ["gen-assembly-info.py"],
     visibility = ["//visibility:public"],
-    deps = ["@rules_python//python/runfiles"],
 )
 
 genrule(