chore: removed unsupport vision product search samples (GoogleCloudPlatform#1306)

Author: munkhuushmgl

vision/composer.json

@@ -33,28 +33,7 @@
             "src/detect_object_gcs.php",
             "src/detect_web_with_geo_metadata.php",
             "src/detect_web_with_geo_metadata_gcs.php",
-            "src/detect_pdf_gcs.php",
-            "src/product_create.php",
-            "src/product_delete.php",
-            "src/product_get.php",
-            "src/product_image_create.php",
-            "src/product_image_delete.php",
-            "src/product_image_get.php",
-            "src/product_image_list.php",
-            "src/product_list.php",
-            "src/product_search_similar.php",
-            "src/product_search_similar_gcs.php",
-            "src/product_set_add_product.php",
-            "src/product_set_create.php",
-            "src/product_set_delete.php",
-            "src/product_set_get.php",
-            "src/product_set_import.php",
-            "src/product_set_list.php",
-            "src/product_set_list_products.php",
-            "src/product_set_remove_product.php",
-            "src/product_update.php",
-            "src/product_purge_orphan_products.php",
-            "src/product_purge_products_in_product_set.php"
+            "src/detect_pdf_gcs.php"
         ]
     }
 }