Remove unused empty filegroups from connectivityT package.

connectivity-tiramisu-sources filegroup in the framework-t and service
folder is useless after moving all source files to updatable-sources
filegroup, delete them from f/b/packages/connectivityT.

Bug: 210586283
Test: m
Change-Id: I22e9a70a04929144488380d1530cd7baa78ce056
diff --git a/framework-t/Sources.bp b/framework-t/Sources.bp
index 53b4163..b30ee80 100644
--- a/framework-t/Sources.bp
+++ b/framework-t/Sources.bp
@@ -124,13 +124,6 @@
     ],
 }
 
-// TODO: remove this empty filegroup.
-filegroup {
-    name: "framework-connectivity-tiramisu-sources",
-    srcs: [],
-    visibility: ["//frameworks/base"],
-}
-
 filegroup {
     name: "framework-connectivity-tiramisu-updatable-sources",
     srcs: [
diff --git a/service-t/Sources.bp b/service-t/Sources.bp
index 4e669b6..f2e758f 100644
--- a/service-t/Sources.bp
+++ b/service-t/Sources.bp
@@ -59,16 +59,6 @@
     ],
 }
 
-// Connectivity-T common libraries.
-
-// TODO: remove this empty filegroup.
-filegroup {
-    name: "services.connectivity-tiramisu-sources",
-    srcs: [],
-    path: "src",
-    visibility: ["//frameworks/base/services/core"],
-}
-
 cc_library_shared {
     name: "libcom_android_net_module_util_jni",
     min_sdk_version: "30",