Merge #21354: build, doc: Drop no longer required packages from macOS cross-compiling dependencies

f7f3829 build, doc: Drop libbz2-dev from macOS cross-compiling dependencies (Hennadii Stepanov)
d823936 build, doc: Drop libcap-dev from macOS cross-compiling dependencies (Hennadii Stepanov)

Pull request description:

  The `libcap-dev` and `libbz2-dev` packages are no longer required when cross-compiling for macOS.

ACKs for top commit:
  fanquake:
    ACK f7f3829

Tree-SHA512: 820cdc2724f3346c0942d4d4115fc7206f7bf02889d9fa6cbdbd1d9e3afa03a067c1c3fa64dff596aefdc74898178b7c7d64027a6501486e3b606f4760de04ae

Author: fanquake

ci/test/00_setup_env_mac.sh

@@ -9,7 +9,7 @@ export LC_ALL=C.UTF-8
 export CONTAINER_NAME=ci_macos_cross
 export DOCKER_NAME_TAG=ubuntu:20.04  # Check that Focal can cross-compile to macos (Focal is used in the gitian build as well)
 export HOST=x86_64-apple-darwin18
-export PACKAGES="cmake imagemagick libcap-dev librsvg2-bin libz-dev libbz2-dev libtiff-tools libtinfo5 python3-dev python3-setuptools xorriso"
+export PACKAGES="cmake imagemagick librsvg2-bin libz-dev libtiff-tools libtinfo5 python3-dev python3-setuptools xorriso"
 export XCODE_VERSION=11.3.1
 export XCODE_BUILD_ID=11C505
 export RUN_UNIT_TESTS=false

contrib/gitian-descriptors/gitian-osx.yml

@@ -21,9 +21,7 @@ packages:
 - "bsdmainutils"
 - "cmake"
 - "imagemagick"
-- "libcap-dev"
 - "libz-dev"
-- "libbz2-dev"
 - "python3"
 - "python3-dev"
 - "python3-setuptools"

depends/README.md

@@ -44,7 +44,7 @@ The paths are automatically configured and no other options are needed unless ta
 
 #### For macOS cross compilation
 
-    sudo apt-get install curl librsvg2-bin libtiff-tools bsdmainutils cmake imagemagick libcap-dev libz-dev libbz2-dev python3-setuptools libtinfo5 xorriso
+    sudo apt-get install curl librsvg2-bin libtiff-tools bsdmainutils cmake imagemagick libz-dev python3-setuptools libtinfo5 xorriso
 
 #### For Win64 cross compilation