chore(samples): deleting migrated samples

[telpirion]

This PR removes the samples that have been migrated to GoogleCloudPlatform/python-docs-samples in this PR.

[snippet-bot]

Here is the summary of changes.

You are about to delete 42 region tags.

• samples/snippets/beta_snippets.py:20, tag translate_translate_text_beta
• samples/snippets/beta_snippets.py:47, tag translate_batch_translate_text_beta
• samples/snippets/beta_snippets.py:88, tag translate_detect_language_beta
• samples/snippets/beta_snippets.py:117, tag translate_list_codes_beta
• samples/snippets/beta_snippets.py:136, tag translate_list_language_names_beta
• samples/snippets/beta_snippets.py:159, tag translate_create_glossary_beta
• samples/snippets/beta_snippets.py:195, tag translate_list_glossary_beta
• samples/snippets/beta_snippets.py:215, tag translate_get_glossary_beta
• samples/snippets/beta_snippets.py:241, tag translate_delete_glossary_beta
• samples/snippets/beta_snippets.py:260, tag translate_translate_text_with_glossary_beta
• samples/snippets/hybrid_glossaries/hybrid_tutorial.py:16, tag translate_hybrid_imports
• samples/snippets/hybrid_glossaries/hybrid_tutorial.py:30, tag translate_hybrid_project_id
• samples/snippets/hybrid_glossaries/hybrid_tutorial.py:36, tag translate_hybrid_vision
• samples/snippets/hybrid_glossaries/hybrid_tutorial.py:66, tag translate_hybrid_create_glossary
• samples/snippets/hybrid_glossaries/hybrid_tutorial.py:122, tag translate_hybrid_translate
• samples/snippets/hybrid_glossaries/hybrid_tutorial.py:168, tag translate_hybrid_tts
• samples/snippets/hybrid_glossaries/hybrid_tutorial.py:226, tag translate_hybrid_integration
• samples/snippets/quickstart.py:19, tag translate_quickstart
• samples/snippets/snippets.py:27, tag translate_detect_language
• samples/snippets/snippets.py:45, tag translate_list_codes
• samples/snippets/snippets.py:60, tag translate_list_language_names
• samples/snippets/snippets.py:79, tag translate_text_with_model
• samples/snippets/snippets.py:106, tag translate_translate_text
• samples/snippets/translate_v3_batch_translate_text.py:15, tag translate_v3_batch_translate_text
• samples/snippets/translate_v3_batch_translate_text_with_glossary.py:16, tag translate_v3_batch_translate_text_with_glossary
• samples/snippets/translate_v3_batch_translate_text_with_glossary_and_model.py:15, tag translate_v3_batch_translate_text_with_glossary_and_model
• samples/snippets/translate_v3_batch_translate_text_with_model.py:16, tag translate_v3_batch_translate_text_with_model
• samples/snippets/translate_v3_create_glossary.py:15, tag translate_v3_create_glossary
• samples/snippets/translate_v3_delete_glossary.py:15, tag translate_v3_delete_glossary
• samples/snippets/translate_v3_detect_language.py:15, tag translate_v3_detect_language
• samples/snippets/translate_v3_get_glossary.py:15, tag translate_v3_get_glossary
• samples/snippets/translate_v3_get_supported_languages.py:15, tag translate_v3_get_supported_languages
• samples/snippets/translate_v3_get_supported_languages_with_target.py:15, tag translate_v3_get_supported_languages_for_target
• samples/snippets/translate_v3_list_glossary.py:15, tag translate_v3_list_glossary
• samples/snippets/translate_v3_translate_text.py:15, tag translate_v3_translate_text
• samples/snippets/translate_v3_translate_text.py:16, tag translate_v3_translate_text_0
• samples/snippets/translate_v3_translate_text.py:22, tag translate_v3_translate_text_1
• samples/snippets/translate_v3_translate_text.py:34, tag translate_v3_translate_text_2
• samples/snippets/translate_v3_translate_text_with_glossary.py:15, tag translate_v3_translate_text_with_glossary
• samples/snippets/translate_v3_translate_text_with_model.py:15, tag translate_v3_translate_text_with_model
• samples/snippets/translate_v3beta1_batch_translate_document.py:15, tag translate_v3beta1_batch_translate_document
• samples/snippets/translate_v3beta1_translate_document.py:15, tag translate_v3beta1_translate_document

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[dandhlee]

LGTM, one minor nit.

[dandhlee]

Would it be better to move this down to samples/snippets/ instead of samples/?