Remove deprecated paths from dbt_project.yml (#5333)

[Preview](https://docs-getdbt-com-git-dbeatty10-patch-6-dbt-labs.vercel.app/reference/dbt_project.yml)

## What are you changing in this pull request and why?

We deprecated `log-path` and `target-path` from `dbt_project.yml`
beginning in v1.5 via dbt-labs/dbt-core#7185.

So this PR removes them from the docs for `dbt_project.yml` for later
versions to reduce confusion.

## Checklist
- [x] Review the [Content style
guide](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/content-style-guide.md)
so my content adheres to these guidelines.

website/docs/reference/dbt_project.yml.md

@@ -42,8 +42,6 @@ The following example is a list of all available configurations in the `dbt_proj
 [docs-paths](/reference/project-configs/docs-paths): [directorypath]
 [asset-paths](/reference/project-configs/asset-paths): [directorypath]
 
-[target-path](/reference/global-configs/json-artifacts): directorypath
-[log-path](/reference/global-configs/logs): directorypath
 [packages-install-path](/reference/project-configs/packages-install-path): directorypath
 
 [clean-targets](/reference/project-configs/clean-targets): [directorypath]
@@ -123,8 +121,6 @@ vars:
 [docs-paths](/reference/project-configs/docs-paths): [directorypath]
 [asset-paths](/reference/project-configs/asset-paths): [directorypath]
 
-[target-path](/reference/global-configs/json-artifacts): directorypath
-[log-path](/reference/global-configs/logs): directorypath
 [packages-install-path](/reference/project-configs/packages-install-path): directorypath
 
 [clean-targets](/reference/project-configs/clean-targets): [directorypath]