virtual-usb-printer: remove version suffix in libbrillo build rules

The libbrillo library is installed without version suffix.

BUG=chromium:920513
TEST=emerge

Cq-Depend: chromium:1892317, chromium:1892377
Change-Id: I0e3f6dba184ab5e6389707aa6052a0c3d2950ad7
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/virtual-usb-printer/+/1890577
Tested-by: Grace Cham <hscham@chromium.org>
Reviewed-by: Hidehiko Abe <hidehiko@chromium.org>
Reviewed-by: Sean Kau <skau@chromium.org>
Commit-Queue: Grace Cham <hscham@chromium.org>
diff --git a/BUILD.gn b/BUILD.gn
index 80a589f..213622d 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -19,7 +19,7 @@
 
 pkg_config("target_defaults") {
   pkg_deps = [
-    "libbrillo-${libbase_ver}",
+    "libbrillo",
     "libchrome-${libbase_ver}",
   ]
 }