Use sysprop flags on host

Now that sysprop is available for host, we no longer need to guard the
code with #ifdef.

Bug: 261586828
Test: m
Change-Id: I5b97415d2c52b465074e345a843e6d9e1f08171d
diff --git a/services/inputflinger/reader/Android.bp b/services/inputflinger/reader/Android.bp
index c93443a..7f229ec 100644
--- a/services/inputflinger/reader/Android.bp
+++ b/services/inputflinger/reader/Android.bp
@@ -73,6 +73,7 @@
         "libcutils",
         "libjsoncpp",
         "liblog",
+        "libPlatformProperties",
         "libstatslog",
         "libutils",
     ],
@@ -89,7 +90,6 @@
     target: {
         android: {
             shared_libs: [
-                "libPlatformProperties",
                 "libinput",
             ],
         },