remove devcontainer configuration file

devcontainer.json

-// For format details, see https://aka.ms/devcontainer.json. For config options, see the
-// README at: https://github.com/devcontainers/templates/tree/main/src/go-postgres
-{
-    "name": "Go",
-    "dockerComposeFile": "docker-compose.yml",
-    "service": "app",
-    "workspaceFolder": "/workspace",
-    "customizations": {
-        "vscode": {
-            "settings": {
-                "editor.formatOnSave": true,
-                "explorer.fileNesting.enabled": true,
-                "explorer.fileNesting.expand": false,
-                "explorer.fileNesting.patterns": {
-                    ".meta": "go.*,*.yml,*.yaml,*.json,.git*,.env*,*.toml,*.md"
-                },
-                "workbench.tree.indent": 16,
-                "[templ]": {
-                    "editor.defaultFormatter": "a-h.templ"
-                },
-                "emmet.includeLanguages": {
-                    "templ": "html"
-                },
-                "files.associations": {
-                    "*.css": "tailwindcss"
-                },
-                "editor.quickSuggestions": {
-                    "strings": "on"
-                },
-                "tailwindCSS.includeLanguages": {
-                    "templ": "html"
-                }
-            },
-            "extensions": [
-                "golang.go",
-                "GitHub.copilot",
-                "tamasfe.even-better-toml",
-                "a-h.templ",
-                "bradlc.vscode-tailwindcss"
-            ]
-        }
-    },
-    "postCreateCommand": "task container:create",
-    "features": {
-        "ghcr.io/dusansimic/devcontainer-features/templ:0": {},
-        "ghcr.io/devcontainers-extra/features/go-task:1": {},
-        "ghcr.io/r3dpoint/devcontainer-features/tailwindcss-standalone-cli:1": {}
-    }
-}
\ No newline at end of file