sm8450-common: vintf: Drop tetheroffload.config from manifest

Change-Id: Iaf4611a3eb0f6f24f09a6dcabf56569fc317c10d

vintf/manifest.xml

@@ -393,16 +393,6 @@ IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
         </interface>
     </hal>
     <!-- Tether Offload -->
-    <hal format="hidl">
-      <name>android.hardware.tetheroffload.config</name>
-      <transport>hwbinder</transport>
-      <version>1.0</version>
-      <interface>
-          <name>IOffloadConfig</name>
-          <instance>default</instance>
-      </interface>
-    </hal>
-
     <hal format="hidl">
       <name>android.hardware.tetheroffload.control</name>
       <transport>hwbinder</transport>