OsmocomBB/Dockerfile: drop unneeded dependencies

Change-Id: I6804b4f6ee3b81e470d9e1514c34931a271a42bc

osmo-virtphy-master/Dockerfile

@@ -13,13 +13,7 @@ RUN	apt-key add /tmp/Release.key && \
 ADD	$OSMOCOM_REPO/Release /tmp/Release
 RUN	apt-get update && \
 	apt-get install -y --no-install-recommends \
-		telnet \
-		libosmocore-dev \
-		libosmo-abis-dev \
-		libosmo-netif-dev \
-		libosmo-sccp-dev \
-		libsmpp34-dev \
-		libgtp-dev && \
+		libosmocore-dev && \
 	apt-get clean
 
 WORKDIR	/tmp

osmocom-bb-trxcon/Dockerfile

@@ -15,7 +15,6 @@ RUN	apt-key add /tmp/Release.key && \
 ADD	$OSMOCOM_REPO/Release /tmp/Release
 RUN	apt-get update && \
 	apt-get install -y --no-install-recommends \
-		tcpdump \
 		libosmocore-dev && \
 	apt-get clean