manifest: Use an specific revision for the prebuilt aarch64-linux-android-4.9

We need to add back the gcc 4.9 for the old kernel, like sm8150 for some devices

https://android.googlesource.com/platform/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/+/fc97ce6abfe822403eb219dcbd1067a53c49e4f1

Change-Id: Ic48627ff18c5476e9cc598d6c1be77d0cd65416f
diff --git a/remove.xml b/remove.xml
index c76685b..8dbed80 100644
--- a/remove.xml
+++ b/remove.xml
@@ -34,4 +34,5 @@
     <remove-project name="platform/packages/modules/DnsResolver" />
     <remove-project name="platform/packages/modules/Wifi" />
 
+    <remove-project name="platform/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9" />
 </manifest>