Remove grafana code, dependabot, README references and sonar config (#1193)

Author: edhall-nhs

.github/dependabot.yml

@@ -7,7 +7,6 @@ version: 2
 updates:
   - package-ecosystem: "docker"
     directories:
-      - "/infrastructure/grafana/non-prod/docker"
       - "/lambdas/ack_backend"
       - "/lambdas/batch_processor_filter"
       - "/lambdas/delta_backend"
@@ -74,7 +73,6 @@ updates:
 
   - package-ecosystem: "terraform"
     directories:
-      - "/infrastructure/grafana/non-prod/terraform"
       - "/infrastructure/account"
       - "/infrastructure/instance"
       - "/infrastructure/terraform_aws_backup/**"

README.md

@@ -50,13 +50,12 @@ GitHub Actions for our entire pipeline.
 
 ### Infrastructure
 
-| Folder                 | Description                                                      |
-| ---------------------- | ---------------------------------------------------------------- |
-| `account`              | Base infrastructure components deployed on a per account basis.  |
-| `grafana`              | Terraform configuration for Grafana, built on top of core infra. |
-| `instance`             | Core Terraform app infrastructure.                               |
-| `terraform_aws_backup` | Streamlined backup processing with AWS.                          |
-| `proxies`              | Apigee API proxy definitions.                                    |
+| Folder                 | Description                                                     |
+| ---------------------- | --------------------------------------------------------------- |
+| `account`              | Base infrastructure components deployed on a per account basis. |
+| `instance`             | Core Terraform app infrastructure.                              |
+| `terraform_aws_backup` | Streamlined backup processing with AWS.                         |
+| `proxies`              | Apigee API proxy definitions.                                   |
 
 ---