Revert "[gn] Have the dump_breakpad_symbols produced an archive of breakpad symbols"

This reverts commit 43b90d08b445bb4b0f27b5849f57d5ed3ec7e1e2.

Reason for revert: This is breaking the release builders; Ninja build executes this command and the '-tar-file' flag is not defined

Original change's description:
> [gn] Have the dump_breakpad_symbols produced an archive of breakpad symbols
> 
> IN-851 #comment
> 
> Change-Id: I123dcc5bdd7bfe712d032ec9ddfc64b794812ba3

TBR=joshuaseaton@google.com,tonglisayhi@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Change-Id: Idbadce5b8e4f27842e81f83a40a35ee026b5a197
diff --git a/gn/BUILD.gn b/gn/BUILD.gn
index 4fd03b2..be027c5 100644
--- a/gn/BUILD.gn
+++ b/gn/BUILD.gn
@@ -152,7 +152,6 @@
   # find and upload the symbol files.
   outputs = [
     "$root_out_dir/breakpad_symbols/symbol_file_mappings.json",
-    "$root_out_dir/breakpad_symbols/breakpad_symbols.tar.gz",
   ]
 
   depfile = "${outputs[0]}.d"
@@ -166,8 +165,6 @@
            rebase_path(outputs[0], root_build_dir),
            "-depfile",
            rebase_path(depfile, root_build_dir),
-           "-tar-file",
-           rebase_path(outputs[1], root_build_dir),
          ] + rebase_path(sources, root_build_dir)
 }