Remove screenshot from pull request template (#1027)

## 🎟️ Tracking

<!-- Paste the link to the Jira or GitHub issue or otherwise describe /
point to where this change is coming from. -->

## 📔 Objective

<!-- Describe what the purpose of this PR is, for example what bug
you're fixing or new feature you're adding. -->

We almost never use the screenshot field, removing it since adding it
should be less effort.

## ⏰ Reminders before review

- Contributor guidelines followed
- All formatters and local linters executed and passed
- Written new unit and / or integration tests where applicable
- Protected functional changes with optionality (feature flags)
- Used internationalization (i18n) for all UI strings
- CI builds passed
- Communicated to DevOps any deployment requirements
- Updated any necessary documentation (Confluence, contributing docs) or
informed the documentation
  team

## 🦮 Reviewer guidelines

<!-- Suggested interactions but feel free to use (or not) as you desire!
-->

- 👍 (`:+1:`) or similar for great changes
- 📝 (`:memo:`) or ℹ️ (`:information_source:`) for notes or general info
- ❓ (`:question:`) for questions
- 🤔 (`:thinking:`) or 💭 (`:thought_balloon:`) for more open inquiry
that's not quite a confirmed
  issue and could potentially benefit from discussion
- 🎨 (`:art:`) for suggestions / improvements
- ❌ (`:x:`) or ⚠️ (`:warning:`) for more significant problems or
concerns needing attention
- 🌱 (`:seedling:`) or ♻️ (`:recycle:`) for future improvements or
indications of technical debt
- ⛏ (`:pick:`) for minor or nitpick changes

.github/PULL_REQUEST_TEMPLATE.md

@@ -6,10 +6,6 @@
 
 <!-- Describe what the purpose of this PR is, for example what bug you're fixing or new feature you're adding. -->
 
-## 📸 Screenshots
-
-<!-- Required for any UI changes; delete if not applicable. Use fixed width images for better display. -->
-
 ## ⏰ Reminders before review
 
 - Contributor guidelines followed