macOS Signing Scripts: Stop generating the notarization sentinel file.

The internal signing job now always notarizes.

Bug: 850199
Change-Id: I2450be540779e60049425065695555fa04296a8b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1804581
Auto-Submit: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Robert Sesek <rsesek@chromium.org>
Cr-Commit-Position: refs/heads/master@{#696622}

chrome/installer/mac/BUILD.gn

@@ -11,7 +11,6 @@ import("//chrome/process_version_rc_template.gni")
 group("mac") {
   public_deps = [
     ":copies",
-    ":notarization_sentinel",
   ]
 }
 
@@ -63,24 +62,6 @@ copy("copy_signing") {
   ]
 }
 
-action("notarization_sentinel") {
-  visibility = [ ":mac" ]
-
-  script = "//build/redirect_stdout.py"
-
-  _output = "$_packaging_dir/notarize_me.txt"
-
-  args = [
-    rebase_path(_output, root_out_dir),
-    "echo",
-    "yes-1",
-  ]
-
-  outputs = [
-    _output,
-  ]
-}
-
 copy("copies") {
   visibility = [ ":mac" ]