refactor: Removed kiln upload-release command

Removed the code, docs and tests around kiln upload release command

[TNZ-33162] - [Kiln]: Remove upload-release command, its corresponding code, docs and tests from Kiln repo
JIRA Link: https://vmw-jira.broadcom.net/browse/TNZ-33162
Date: 05-Mar-2025

Authored-by: Ramkumar Vengadakrishnan <ramkumar.vengadakrishnan@broadcom.com>

Author: ram-pivot

README.md

@@ -158,7 +158,6 @@ Usage: kiln [options] <command> [<args>]
 
 Commands:
   bake                     bakes a tile
-  cache-compiled-releases  Cache compiled releases
   fetch                    fetches releases
   find-release-version     prints a json string of a remote release satisfying the Kilnfile version and stemcell constraints
   find-stemcell-version    prints the latest stemcell version from Pivnet using the stemcell type listed in the Kilnfile
@@ -172,7 +171,6 @@ Commands:
   test                     Test manifest for a product
   update-release           bumps a release to a new version
   update-stemcell          updates stemcell and release information in Kilnfile.lock
-  upload-release           uploads a BOSH release to an s3 release_source
   validate                 validate Kilnfile and Kilnfile.lock
   version                  prints the kiln release version
 ```

TILE_AUTHOR_GUIDE.md

@@ -403,7 +403,7 @@ Please see [Path Templates](#path-templates). The value of `remote_path` in the
 
 #### <a id='release-source-s3'></a> AWS S3
 
-Kiln can fetch and upload releases to/from AWS S3.
+Kiln can fetch releases from AWS S3.
 
 ```yaml
 release_sources:
@@ -464,9 +464,6 @@ om upload-product --product=tile.pivotal
 om configure-product --config=simple_config.yml
 om apply-changes --product-name=my-tile-name
 
-# Download Compiled BOSH Releases from the BOSH Director and Upload them to the S3 Bucket or Artifactory
-kiln cache-compiled-releases --upload-target-id=my_compiled_release_bucket --name=hello
-
 # Commit and push the changes to Kilnfile.lock
 git add -p Kilnfile.lock
 git commit -m "compile BOSH Releases with $(yq '.stemcell_criteria.os' Kilnfile.lock)/$(yq '.stemcell_criteria.version' Kilnfile.lock)"

internal/acceptance/workflows/using_kiln.feature

@@ -43,5 +43,4 @@ Feature: As a developer, I want the Kiln CLI to be usable
       | sync-with-local         |
       | update-release          |
       | update-stemcell         |
-      | upload-release          |
-      | validate                |
+      | validate                |

internal/commands/fakes/release_uploader_finder.go

@@ -352,11 +352,3 @@ func writeYAMLHelper(t *testing.T, path string, data any) {
 		t.Fatal(err)
 	}
 }
-
-func writeYAML(path string, data any) error {
-	buf, err := yaml.Marshal(data)
-	if err != nil {
-		return err
-	}
-	return os.WriteFile(path, buf, 0o666)
-}