debian: Remove osmo-trx-usrp1 until we can build libusrp1.deb

Change-Id: I43163755a29014fe1f098e994f8df79d853c90f8
diff --git a/debian/osmo-trx-usrp1.install b/debian/osmo-trx-usrp1.install
deleted file mode 100644
index 1b76249..0000000
--- a/debian/osmo-trx-usrp1.install
+++ /dev/null
@@ -1 +0,0 @@
-/usr/bin/osmo-trx-usrp1