Remove optional flag from qspa manifest entry

Change-Id: Ic1932dc42c72a6a7fae792e7ae9a5eba0abcdafb
diff --git a/qspaservice/vendor.qti.qspa-service.xml b/qspaservice/vendor.qti.qspa-service.xml
index f1939fe..b7a0c63 100644
--- a/qspaservice/vendor.qti.qspa-service.xml
+++ b/qspaservice/vendor.qti.qspa-service.xml
@@ -3,7 +3,7 @@
 -->
 
 <manifest version="1.0" type="device">
-    <hal format="aidl" optional="true">
+    <hal format="aidl">
         <name>vendor.qti.hardware.qspa</name>
         <version>1</version>
         <interface>