Remove unused files (#42)

* Remove obsolete Docker configurations, environment files, and subgraph definitions for bellecour, test, and viviani. Refactor unit tests for IexecCategoryManager and IexecPoco, consolidating mock utilities and event parameter builders into a unified structure.

Author: Le-Caignec

.gitignore

@@ -2,6 +2,7 @@ node_modules
 build
 generated
 yarn.lock
-test/.bin
+tests/.bin/*
+tests/.latest.json
 subgraph.test.yaml
 test-stack/.env

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## vNEXT
 
+- Remove unused files (#42)
 - Rewrite Jenkins CI for future migration (#36, #37)
 - Add a modern test stack, agnostic to the forked network. (#38)
 - Add a section in the README to explain how to use the Docker-based subgraph deployer. (#38)