Mention removal of AndroidX Core (#4150)

Author: marandaneto

src/platforms/android/common/performance/instrumentation/automatic-instrumentation.mdx

@@ -158,7 +158,21 @@ Unresponsive UI and animation hitches annoy users and degrade the user experienc
 
 Slow and frozen frames are Mobile Vitals, which you can learn about in the [full documentation](/product/performance/mobile-vitals).
 
-### OkHttp library Instrumentation
+### AndroidX Support
+
+Sentry uses the AndroidX.Core library for detecting [slow and frozen frames](#slow-and-frozen-frames). This is necessary to produce accurate results across all Android OS versions.
+
+We check for availability at runtime, so if you're not using AndroidX.Core, you can remove it from Sentry's transitive dependencies.
+
+```Groovy
+implementation ('io.sentry:sentry-android:{{ packages.version('sentry.java.android', '4.2.0') }}') {
+    exclude group: 'androidx.core', module: 'core'
+}
+```
+
+Note that by removing this transitive dependency, slow and frozen frames won't be reported.
+
+### OkHttp Library Instrumentation
 
 The OkHttp's instrumentation, once added the `SentryOkHttpInterceptor`, starts a span out of the active span bound to the scope for each HTTP Request. The SDK sets the span `operation` to `http.client` and `description` to request `$method and $URL`; for example, `GET https://sentry.io`.