osbuilder: Remove leftover pieces related to cmake

The osbuilder scripts include a bunch of code for installing cmake, even
though cmake is never invoked.  versions.yaml claims it's needed to build
grpc-rs, but that doesn't appear to be in our dependency graph.

Presumably, we used to need this, but don't any more.  So, remove all cmake
references.

Fixes #1309

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

tools/osbuilder/rootfs-builder/centos/Dockerfile.in

@@ -33,8 +33,6 @@ RUN yum -y update && yum install -y \
     vim \
     which
 
-# install cmake because centos7's cmake is too old
-@INSTALL_CMAKE@
 @INSTALL_MUSL@
 # This will install the proper golang to build Kata components
 @INSTALL_GO@

tools/osbuilder/rootfs-builder/clearlinux/Dockerfile.in

@@ -12,7 +12,6 @@ RUN dnf -y update && dnf install -y \
     automake \
     binutils \
     chrony \
-    cmake \
     coreutils \
     curl \
     curl \

tools/osbuilder/rootfs-builder/debian/Dockerfile-aarch64.in

@@ -13,7 +13,6 @@ RUN apt-get update && apt-get install -y \
     binutils \
     build-essential \
     chrony \
-    cmake \
     coreutils \
     curl \
     debianutils \

tools/osbuilder/rootfs-builder/debian/Dockerfile.in

@@ -15,7 +15,6 @@ RUN apt-get update && apt-get --no-install-recommends install -y \
     build-essential \
     ca-certificates \
     chrony \
-    cmake \
     coreutils \
     curl \
     debianutils \

tools/osbuilder/rootfs-builder/fedora/Dockerfile.in

@@ -12,7 +12,6 @@ RUN dnf -y update && dnf install -y \
     automake \
     binutils \
     chrony \
-    cmake \
     coreutils \
     curl \
     gcc \

tools/osbuilder/rootfs-builder/rootfs.sh

@@ -17,7 +17,6 @@ GO_AGENT_PKG=${GO_AGENT_PKG:-github.com/kata-containers/agent}
 RUST_AGENT_PKG=${RUST_AGENT_PKG:-github.com/kata-containers/kata-containers}
 RUST_AGENT=${RUST_AGENT:-yes}
 RUST_VERSION="null"
-CMAKE_VERSION=${CMAKE_VERSION:-"null"}
 MUSL_VERSION=${MUSL_VERSION:-"null"}
 AGENT_BIN=${AGENT_BIN:-kata-agent}
 AGENT_INIT=${AGENT_INIT:-no}
@@ -354,11 +353,6 @@ build_rootfs_distro()
 
 	echo "Required rust version: $RUST_VERSION"
 
-	detect_cmake_version ||
-		die "Could not detect the required cmake version for AGENT_VERSION='${AGENT_VERSION:-master}'."
-
-	echo "Required cmake version: $CMAKE_VERSION"
-
 	detect_musl_version ||
 		die "Could not detect the required musl version for AGENT_VERSION='${AGENT_VERSION:-master}'."
 

tools/osbuilder/rootfs-builder/suse/install-packages.sh

@@ -28,7 +28,6 @@ zypper --non-interactive install --no-recommends --force-resolution \
     autoconf \
     automake \
     binutils \
-    cmake \
     coreutils \
     curl \
     gcc \

tools/osbuilder/rootfs-builder/ubuntu/Dockerfile-aarch64.in

@@ -17,7 +17,6 @@ RUN apt-get update && apt-get install -y \
     binutils \
     build-essential \
     chrony \
-    cmake \
     coreutils \
     curl \
     debianutils \

tools/osbuilder/rootfs-builder/ubuntu/Dockerfile.in

@@ -19,7 +19,6 @@ RUN apt-get update && apt-get --no-install-recommends install -y \
     build-essential \
     ca-certificates \
     chrony \
-    cmake \
     coreutils \
     curl \
     debianutils \