Simplify imported resource

Bid percentage and tags can use implicit defaults. Desired vCPUs is
managed by AWS and should not be tracked in Terraform.

Plan shows "1 to import" with no resource action indicators (the imported
resource will not be changed).

Author: victorlin

env/production/aws-batch.tf

@@ -105,8 +105,6 @@ resource "aws_batch_compute_environment" "c7a_instances_2026_05_24" {
 
   compute_resources {
     allocation_strategy = "BEST_FIT"
-    bid_percentage      = 0
-    desired_vcpus       = 4
     instance_role       = "arn:aws:iam::827581582529:instance-profile/ecsInstanceRole"
     instance_type       = ["c7a.2xlarge", "c7a.4xlarge", "c7a.8xlarge", "c7a.large", "c7a.medium", "c7a.xlarge"]
     max_vcpus           = 512
@@ -115,7 +113,6 @@ resource "aws_batch_compute_environment" "c7a_instances_2026_05_24" {
     # dynamically instead of hardcoding them here.
     security_group_ids  = ["sg-09316f4e9077adc8c"]
     subnets             = ["subnet-ece172e0"]
-    tags                = {}
     type                = "EC2"
 
     ec2_configuration {