Remove libevdev2-dbgsym

Removing this package appears to resolve an issue where the docker unit
test script fails due to missing a dependency:
libevdev2-dbgsym : Depends: libevdev2 (= 1.9.1+dfsg-1)

Signed-off-by: Zane Shelley <zshelle@us.ibm.com>
Change-Id: Id04eea803bbdcfb6ac959f8b441cc8b4b0a29b92
diff --git a/scripts/build-unit-test-docker b/scripts/build-unit-test-docker
index 467b02d..24c42d9 100755
--- a/scripts/build-unit-test-docker
+++ b/scripts/build-unit-test-docker
@@ -759,7 +759,6 @@
     systemd \
     libssl-dev \
     libevdev-dev \
-    libevdev2-dbgsym \
     libjpeg-dev \
     libpng-dev \
     ninja-build \