[AUDIT] Run knip over twenty-server (#21159)

# Introduction
Run [knip](https://knip.dev/) over twenty-server
Used config:
```json
{
  "$schema": "https://unpkg.com/knip@5/schema.json",
  "workspaces": {
    "packages/twenty-server": {
      "entry": [
        "src/main.ts",
        "src/command/command.ts",
        "src/queue-worker/queue-worker.ts",
        "src/database/scripts/setup-db.ts",
        "src/database/scripts/truncate-db.ts",
        "src/database/clickHouse/migrations/run-migrations.ts",
        "src/database/clickHouse/seeds/run-seeds.ts",
        "src/instrument.ts",
        "lingui.config.ts",
        "test/integration/graphql/codegen/index.ts",
        "test/integration/utils/setup-test.ts",
        "test/integration/utils/teardown-test.ts",
        "scripts/**/*.ts",
        "**/*.spec.ts",
        "**/*.integration-spec.ts"
      ],
      "project": ["src/**/*.ts", "test/**/*.ts", "scripts/**/*.ts"],
      "ignore": [
        "src/database/typeorm/**/migrations/**",
        "src/database/typeorm/**/*.entity.ts",
        "**/*.workspace-entity.ts",
        "**/logic-function-resource/constants/seed-project/**"
      ],
      "ignoreDependencies": ["@types/psl", "@types/aws-lambda"],
      "ignoreBinaries": ["nest", "lingui", "typeorm"]
    }
  }
}
```

packages/twenty-server/src/engine/core-modules/tool/enums/tool-type.enum.ts

@@ -1,7 +0,0 @@
-export enum ToolType {
-  HTTP_REQUEST = 'HTTP_REQUEST',
-  SEND_EMAIL = 'SEND_EMAIL',
-  SEARCH_HELP_CENTER = 'SEARCH_HELP_CENTER',
-  CODE_INTERPRETER = 'CODE_INTERPRETER',
-  NAVIGATE_APP = 'NAVIGATE_APP',
-}

packages/twenty-server/src/engine/core-modules/tool/tools/email-tool/constants/email-tool.constants.ts

@@ -1 +0,0 @@
-export { MAX_EMAIL_RECIPIENTS } from 'twenty-shared/constants';

packages/twenty-server/src/engine/core-modules/tool/types/tool-context.type.ts

@@ -1,6 +0,0 @@
-export type ToolContext = {
-  workspaceId: string;
-  userId?: string;
-  roleId?: string;
-  [key: string]: unknown;
-};