Update TEST_MAPPING file.

Previously, we were running only HostsideRestrictBackgroundNetworkTests
in presubmit. Updating it to run all the tests in this module.

Test: treehugger
Change-Id: I560fed71ab52457fe079d5340b5d294e16c68f93
diff --git a/tests/cts/hostside/TEST_MAPPING b/tests/cts/hostside/TEST_MAPPING
index fcec483..ab6de82 100644
--- a/tests/cts/hostside/TEST_MAPPING
+++ b/tests/cts/hostside/TEST_MAPPING
@@ -4,9 +4,6 @@
       "name": "CtsHostsideNetworkTests",
       "options": [
         {
-          "include-filter": "com.android.cts.net.HostsideRestrictBackgroundNetworkTests"
-        },
-        {
           "exclude-annotation": "androidx.test.filters.FlakyTest"
         },
         {