docs(cli): Remove Proguard release association mention (#15231)

Author: szokeasaurusrex

docs/cli/dif.mdx

@@ -226,24 +226,6 @@ sentry-cli upload-proguard \
     app/build/outputs/mapping/{BuildVariant}/mapping.txt
 ```
 
-Additionally, you can associate the ProGuard mapping file to a specific release:
-
-<Alert>
-
-This step is not required for deobfuscation to work but can help you identify which release a mapping file belongs to when multiple files exist for the same app.
-
-</Alert>
-
-```bash {5-7}
-# Associate the mapping file to the release [email protected]+1
-sentry-cli upload-proguard \
-    --uuid A_VALID_UUID \
-    app/build/outputs/mapping/{BuildVariant}/mapping.txt \
-    --app-id my.app.id \
-    --version 1.0.0 \
-    --version-code 1
-```
-
 After the upload, Sentry deobfuscates future events.
 To make sure that it worked, you can check _Project Settings > ProGuard_ and see if the upload mapping files are listed.