Remove extraneous GitHub metadata (#586)

Funding is now configured at an organisation level
HCL workflow files are deprecated

Signed-off-by: Harsh Shandilya <msfjarvis@gmail.com>

.github/FUNDING.yml

@@ -1,12 +0,0 @@
-# These are supported funding model platforms
-
-github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
-patreon: # Replace with a single Patreon username
-open_collective: Android-Password-Store
-ko_fi: # Replace with a single Ko-fi username
-tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
-community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
-liberapay: # Replace with a single Liberapay username
-issuehunt: # Replace with a single IssueHunt username
-otechie: # Replace with a single Otechie username
-custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

.github/main.workflow

@@ -1,9 +0,0 @@
-workflow "on pull request merge, delete the branch" {
-  on = "pull_request"
-  resolves = ["branch cleanup"]
-}
-
-action "branch cleanup" {
-  uses = "jessfraz/branch-cleanup-action@master"
-  secrets = ["GITHUB_TOKEN"]
-}