chore(db): remove 23 unused database methods (#22999)

Removes 22 database query methods with no callers outside generated code
and the dbauthz wrapper layer (~1,600 lines).

**Security keys (6)** — superseded by `cryptokeys` package:
`GetAppSecurityKey`, `UpsertAppSecurityKey`, `GetOAuthSigningKey`,
`UpsertOAuthSigningKey`, `GetCoordinatorResumeTokenSigningKey`,
`UpsertCoordinatorResumeTokenSigningKey`

**Superseded queries (4):**
- `GetProvisionerJobsByIDs` → `GetProvisionerJobsByIDsWithQueuePosition`
- `GetDeploymentDAUs` / `GetTemplateDAUs` →
`GetTemplateInsightsByInterval`
- `GetWorkspaceBuildParametersByBuildIDs` + its `GetAuthorized...`
variant → unused

**OAuth2 (2):**
`GetOAuth2ProviderAppByRegistrationToken`,
`UpdateOAuth2ProviderAppSecretByID`

**Chat (4)** — pre-wired with no callers:
`GetChatModelConfigByProviderAndModel`, `DeleteChatMessagesByChatID`,
`ListChatsByRootID`, `ListChildChatsByParentID`

**Other (6):**
`DeleteGitSSHKey`, `UpdateUserLinkedID`, `GetFileIDByTemplateVersionID`,
`GetTemplateVersionHasAITask`, `InsertUserGroupsByName`,
`RemoveUserFromAllGroups`

coderd/database/queries/workspacebuildparameters.sql

@@ -42,17 +42,3 @@ FROM (
 ORDER BY created_at DESC, name
 LIMIT 100;
 
--- name: GetWorkspaceBuildParametersByBuildIDs :many
-SELECT
-    workspace_build_parameters.*
-FROM
-    workspace_build_parameters
-JOIN
-    workspace_builds ON workspace_builds.id = workspace_build_parameters.workspace_build_id
-JOIN
-    workspaces ON workspaces.id = workspace_builds.workspace_id
-WHERE
-    workspace_build_parameters.workspace_build_id = ANY(@workspace_build_ids :: uuid[])
-    -- Authorize Filter clause will be injected below in GetAuthorizedWorkspaceBuildParametersByBuildIDs
-    -- @authorize_filter
-;