Don't condition the time_controller target on rtc_include_tests.

Bug: none
Change-Id: Ifb3f811c71a778a447c41593902c417614ae9824
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/167723
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Philip Eliasson <philipel@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30400}

test/time_controller/BUILD.gn

@@ -8,7 +8,6 @@
 
 import("../../webrtc.gni")
 
-if (rtc_include_tests) {
 rtc_library("time_controller") {
   testonly = true
   sources = [
@@ -45,6 +44,8 @@ if (rtc_include_tests) {
     "//third_party/abseil-cpp/absl/strings",
   ]
 }
+
+if (rtc_include_tests) {
   rtc_library("time_controller_unittests") {
     testonly = true
     sources = [