delete devcontainer (#6582)

.devcontainer/devcontainer.json

@@ -1,13 +0,0 @@
-{
-    "name": "OpenBB Platform Dev Container",
-    "image": "mcr.microsoft.com/devcontainers/python:1-3.10-bookworm",
-    "postCreateCommand": "python3 -m venv obb && . obb/bin/activate && pip install poetry && python3 openbb_platform/dev_install.py --extras --cli",
-    "customizations": {
-        "vscode": {
-            "extensions": [
-                "ms-python.python",
-                "ms-python.vscode-pylance"
-            ]
-        }
-    }
-}