Drop unused Build-Depends: libbz2-dev and liblzma-dev.

Closes: #981135

Compression support is handled via libarchive.

debian/changelog

@@ -1,3 +1,10 @@
+cmake (3.18.4-2) UNRELEASED; urgency=medium
+
+  * Drop unused Build-Depends: libbz2-dev and liblzma-dev. (Closes: #981135)
+    Compression support is handled via libarchive.
+
+ -- Helmut Grohne <helmut@subdivi.de>  Tue, 26 Jan 2021 16:54:47 +0100
+
 cmake (3.18.4-1) unstable; urgency=medium
 
   [ Tobias Frost ]

debian/control

@@ -7,11 +7,9 @@ Uploaders: Lisandro Damián Nicanor Pérez Meyer <lisandro@debian.org>,
 Build-Depends: debhelper-compat (= 12),
                freebsd-glue [kfreebsd-any],
                libarchive-dev (>= 3.3.3),
-               libbz2-dev,
                libcurl4-openssl-dev | libcurl-ssl-dev,
                libexpat1-dev,
                libjsoncpp-dev,
-               liblzma-dev,
                libncurses5-dev,
                librhash-dev,
                libuv1-dev (>= 1.10),