Drop unused dependencies dir (#20482)

* Drop unused dependencies dir

* Get rid of deps_upgrade.py

dependencies/2-25-21/deps-upgrade-output.txt

@@ -1,17 +0,0 @@
-hridoyroy@Hridoys-MBP vault % python3 deps_upgrade.py dep.txt           
-github.com/satori/go.uuid
-golang.org/x/text
-github.com/hashicorp/go-gcp-common
-github.com/hashicorp/vault-plugin-secrets-azure
-go.mongodb.org/mongo-driver
-github.com/Microsoft/hcsshim
-package github.com/Microsoft/hcsshim
-	imports github.com/Microsoft/go-winio/pkg/guid
-	imports golang.org/x/sys/windows: build constraints exclude all Go files in /Users/hridoyroy/go/pkg/mod/golang.org/x/sys@v0.0.0-20210124154548-22da62e12c0c/windows
-golang.org/x/crypto
-github.com/containerd/containerd
-github.com/aws/aws-sdk-go
-github.com/hashicorp/serf
-github.com/miekg/dns
-github.com/hashicorp/go-discover
-github.com/hashicorp/serf

dependencies/2-25-21/deps-upgrade.txt

@@ -1,12 +0,0 @@
-golang.org/x/text
-github.com/hashicorp/go-gcp-common
-github.com/hashicorp/vault-plugin-secrets-azure
-go.mongodb.org/mongo-driver
-github.com/Microsoft/hcsshim
-golang.org/x/crypto
-github.com/containerd/containerd
-github.com/aws/aws-sdk-go
-github.com/hashicorp/serf
-github.com/miekg/dns
-github.com/hashicorp/go-discover
-github.com/hashicorp/serf

scripts/deps_upgrade.py

@@ -1,13 +0,0 @@
-# Copyright (c) HashiCorp, Inc.
-# SPDX-License-Identifier: BUSL-1.1
-
-import os
-import sys
-
-filename = sys.argv[1]
-with open(filename) as f:
-    content = f.readlines()
-    for l in content:
-        name = l.split()[0]
-        print(name)
-        os.system("go get " + name + "@latest")