Document method to remove attributes from scopes (#15462)

Author: cleptric

develop-docs/sdk/telemetry/scopes.mdx

@@ -103,6 +103,20 @@ The method SHOULD accept a dictionary/map/object where:
 
 See [Span Protocol - Common Attribute Keys](/sdk/telemetry/spans/span-protocol/#common-attribute-keys) for a list of standard attributes and [Sentry Conventions](https://github.com/getsentry/sentry-conventions/) for the complete attribute registry.
 
+### Removing Attributes
+
+Users MUST be able to remove attributes set on any scope using a dedicated method, e.g. `scope.removeAttribute()`.
+
+#### Example Usage
+
+```javascript
+Sentry.getGlobalScope().removeAttribute('app.feature_flag.enabled');
+```
+
+```python
+sentry_sdk.get_global_scope().remove_attribute('app.feature_flag.enabled')
+```
+
 ## Related Documents
 
 This document provides a concise summary of the [Hub & Scope Refactoring](/sdk/miscellaneous/hub_and_scope_refactoring/), focusing on implementation details and expected features. The original document remains unchanged, offering additional historical context and migration strategies.