Bug 1832147 - Remove the leaf feature from the profiler presets

"leaf" feature has been removed since [Bug 1571089](https://bugzilla.mozilla.org/show_bug.cgi?id=1571089)
and it's been removed from the presets in that bug as well. This commit
removes this feature from these presets as well to keep them in sync.
Note that having an unrecognised feature gets ignored automatically and
it doesn't throw any error, but still these presets should kept up-to-date.

app/src/main/java/org/mozilla/fenix/perf/ProfilerUtils.kt

@@ -24,8 +24,14 @@ private const val TOKEN = "profileToken"
 private const val PROFILER_DATA_URL = "https://profiler.firefox.com/public/"
 
 private val firefox_features = arrayOf(
-    "screenshots", "js", "leaf", "stackwalk", "cpu", "java",
-    "processcpu", "ipcmessages", "java",
+    "screenshots",
+    "js",
+    "stackwalk",
+    "cpu",
+    "java",
+    "processcpu",
+    "ipcmessages",
+    "java",
 )
 private val firefox_threads = arrayOf(
     "GeckoMain",
@@ -49,7 +55,6 @@ private val graphics_threads = arrayOf(
 
 private val media_features = arrayOf(
     "js",
-    "leaf",
     "stackwalk",
     "cpu",
     "audiocallbacktracing",
@@ -67,7 +72,6 @@ private val media_threads = arrayOf(
 private val networking_features = arrayOf(
     "screenshots",
     "js",
-    "leaf",
     "stackwalk",
     "cpu",
     "java",