task v2 refactor part 3: observer prompt file name (#1816)

skyvern/forge/prompts/skyvern/observer_generate_loop_task.j2

@@ -1,26 +0,0 @@
-You're to assist the user to achieve goals on the web, given the DOM elements in the list, the screenshots of the website. Now the user needs to iterate throught a list of values. For each value, the user has the same goal and plan to complete a task.
-
-MAKE SURE YOU OUTPUT VALID JSON. No text before or after JSON, no trailing commas, no comments (//), no unnecessary quotes, etc.
-
-Reply in JSON format with the following keys:
-{
-  "thoughts": str, // Think step by step. What needs to been done for each value in the list.
-  "task": str, // Describe the task complete for each value in one sentence. Be concise about what you need to do and include all the user data required to complete the task.
-}
-
-The URL of the page you're on right now is `{{ current_url }}`.
-
-Clickable elements from the page:
-```
-{{ elements }}
-```
-
-User's overall plan right now:
-```
-{{ plan }}
-```
-
-Current datetime, ISO format:
-```
-{{ local_datetime }}
-```