Removed unneeded id.home menu handling

vector/src/main/java/im/vector/app/features/spaces/SpaceCreationActivity.kt

@@ -19,7 +19,6 @@ package im.vector.app.features.spaces
 import android.content.Context
 import android.content.Intent
 import android.os.Bundle
-import android.view.MenuItem
 import androidx.appcompat.app.AlertDialog
 import androidx.fragment.app.Fragment
 import com.airbnb.mvrx.Loading
@@ -65,14 +64,6 @@ class SpaceCreationActivity : SimpleFragmentActivity(), CreateSpaceViewModel.Fac
         }
     }
 
-    override fun onOptionsItemSelected(item: MenuItem): Boolean {
-        if (item.itemId == android.R.id.home) {
-            onBackPressed()
-            return true
-        }
-        return super.onOptionsItemSelected(item)
-    }
-
     override fun initUiAndData() {
         super.initUiAndData()
         viewModel.subscribe(this) {