chore(docs): remove samples

[meredithslota]

Follow-up on #305 — send cl/520747639 to address sample includes, so do not merge until snippetbot is happy. Thanks!

[snippet-bot]

Here is the summary of changes.

You are about to delete 20 region tags.

• samples/snippets/job_search_autocomplete_job_title.py:15, tag job_search_autocomplete_job_title
• samples/snippets/job_search_batch_create_jobs.py:15, tag job_search_batch_create_jobs
• samples/snippets/job_search_batch_update_jobs.py:15, tag job_search_batch_update_jobs
• samples/snippets/job_search_commute_search.py:15, tag job_search_commute_search
• samples/snippets/job_search_create_client_event.py:15, tag job_search_create_client_event
• samples/snippets/job_search_create_company.py:15, tag job_search_create_company
• samples/snippets/job_search_create_job.py:15, tag job_search_create_job
• samples/snippets/job_search_create_job_custom_attributes.py:15, tag job_search_create_job_custom_attributes
• samples/snippets/job_search_create_tenant.py:15, tag job_search_create_tenant
• samples/snippets/job_search_custom_ranking_search.py:15, tag job_search_custom_ranking_search
• samples/snippets/job_search_delete_company.py:15, tag job_search_delete_company
• samples/snippets/job_search_delete_job.py:15, tag job_search_delete_job
• samples/snippets/job_search_delete_tenant.py:15, tag job_search_delete_tenant
• samples/snippets/job_search_get_company.py:15, tag job_search_get_company
• samples/snippets/job_search_get_job.py:15, tag job_search_get_job
• samples/snippets/job_search_get_tenant.py:15, tag job_search_get_tenant
• samples/snippets/job_search_histogram_search.py:15, tag job_search_histogram_search
• samples/snippets/job_search_list_companies.py:15, tag job_search_list_companies
• samples/snippets/job_search_list_jobs.py:15, tag job_search_list_jobs
• samples/snippets/job_search_list_tenants.py:15, tag job_search_list_tenants

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[meredithslota]

Submitted cl/520747639 so this is ok to merge whenever snippetbot is happy.