Remove erroneously included infra files (#2179)

Nothing sensitive was included.

tools/deploy/terraform-aws-fargate/database.tf

@@ -1,12 +0,0 @@
-resource "aws_db_instance" "default" {
-  allocated_storage    = 10
-  engine               = "mysql"
-  engine_version       = "5.7"
-  instance_class       = "db.t3.micro"
-  identifier_prefix = "fleet"
-  name                 = "fleet"
-  username             = "foo"
-  password             = "foobarbaz"
-  parameter_group_name = "default.mysql5.7"
-  skip_final_snapshot  = true
-}

tools/deploy/terraform-aws-fargate/variables.tf

@@ -1 +0,0 @@
-variable "vpc_id" {}

tools/docker-fleetctl-awscli/Dockerfile

@@ -1,4 +0,0 @@
-FROM amazon/aws-cli 
-MAINTAINER Fleet Developers <engineering@fleetdm.com>
-
-RUN curl https://github.com/fleetdm/fleet/releases/latest/download/fleetctl-linux.tar.gz | tar -xf