Revert^3 "Enable SVE when available in AVF"

This reverts commit e108d05a09845f04bf4578f811c39d0b0aa213ca.

Reason for revert: See b/391978891#comment31

Change-Id: I48165269cd5b0c9368e4ca4fb0b76377cd265d75
diff --git a/android/virtmgr/src/crosvm.rs b/android/virtmgr/src/crosvm.rs
index df53bc6..096d3b5 100644
--- a/android/virtmgr/src/crosvm.rs
+++ b/android/virtmgr/src/crosvm.rs
@@ -1110,9 +1110,6 @@
     command.arg("--mem").arg(memory_mib.to_string());
 
     if let Some(cpus) = config.cpus {
-        #[cfg(target_arch = "aarch64")]
-        command.arg("--cpus").arg(cpus.to_string() + ",sve=[auto=true]");
-        #[cfg(not(target_arch = "aarch64"))]
         command.arg("--cpus").arg(cpus.to_string());
     }
 
@@ -1124,12 +1121,7 @@
                     command.arg("--virt-cpufreq");
                 }
             }
-            #[cfg(target_arch = "aarch64")]
-            command.arg("--cpus").arg("sve=[auto=true]");
         } else if let Some(cpus) = get_num_cpus() {
-            #[cfg(target_arch = "aarch64")]
-            command.arg("--cpus").arg(cpus.to_string() + ",sve=[auto=true]");
-            #[cfg(not(target_arch = "aarch64"))]
             command.arg("--cpus").arg(cpus.to_string());
         } else {
             bail!("Could not determine the number of CPUs in the system");