CI: remove .builds folder

We stopped using the CI relying on this folder and moved to Github's, so
I'm removing these files.

Signed-off-by: Iker Pedrosa <ipedrosa@redhat.com>

.builds/alpine-edge.yml

@@ -1,34 +0,0 @@
-image: alpine/latest
-# apk add --update alpine-sdk
-packages:
-  - cmd:setcap
-  - autoconf
-  - automake
-  - byacc
-  - expect
-  - gettext
-  - gettext-dev
-  - gettext-lang
-  - libbsd-dev
-  - libcap-dev
-  - libtool
-  - linux-pam-dev
-  - pkgconf
-  - sed
-sources:
-  - https://github.com/shadow-maint/shadow
-tasks:
-  - build: |
-      cd shadow
-      ./autogen.sh --without-selinux --disable-man --disable-nls
-      grep ENABLE_ config.status
-  - tasks: |
-      cd shadow
-      cat /proc/self/uid_map
-      cat /proc/self/status
-      make
-      make DESTDIR=/tmp/shadow-inst install
-      sudo make install
-      #TODO - fix up the tests.  Let's merge what's here now as it
-      #at least tests build.
-      #(cd tests; sudo ./run_some || { cat testsuite.log; false; })

.builds/fedora.yml

@@ -1,33 +0,0 @@
-image: fedora/latest
-packages:
-  - autoconf
-  - automake
-  - byacc
-  - expect
-  - findutils
-  - gettext
-  - gettext-devel
-  - git
-  - libbsd-devel
-  - libselinux-devel
-  - libsemanage-devel
-  - libtool
-  - libxslt
-  - pkgconf
-sources:
-  - https://github.com/shadow-maint/shadow
-tasks:
-  - build: |
-      cd shadow
-      ./autogen.sh --with-selinux --enable-man
-      grep ENABLE_ config.status
-  - tasks: |
-      cd shadow
-      cat /proc/self/uid_map
-      cat /proc/self/status
-      make
-      make DESTDIR=/tmp/shadow-inst install
-      sudo make install
-      #TODO - fix up the tests.  Let's merge what's here now as it
-      #at least tests build.
-      #(cd tests; sudo ./run_some || { cat testsuite.log; false; })

.builds/ubuntu-focal.yml

@@ -1,28 +0,0 @@
-image: ubuntu/focal
-packages:
-  - automake
-  - autopoint
-  - xsltproc
-  - libbsd-dev
-  - libselinux1-dev
-  - gettext
-  - expect
-  - byacc
-  - libtool
-  - pkgconf
-sources:
-  - https://github.com/shadow-maint/shadow
-tasks:
-  - build: |
-      cd shadow
-      ./autogen.sh --without-selinux --disable-man
-      grep ENABLE_ config.status
-  - tasks: |
-      cd shadow
-      cat /proc/self/uid_map
-      cat /proc/self/status
-      systemd-detect-virt
-      make
-      make DESTDIR=/tmp/shadow-inst install
-      sudo make install
-      (cd tests; sudo ./run_some || { cat testsuite.log; false; })

.builds/ubuntu-jammy.yml

@@ -1,28 +0,0 @@
-image: ubuntu/22.04
-packages:
-  - automake
-  - autopoint
-  - xsltproc
-  - libbsd-dev
-  - libselinux1-dev
-  - gettext
-  - expect
-  - byacc
-  - libtool
-  - pkgconf
-sources:
-  - https://github.com/shadow-maint/shadow
-tasks:
-  - build: |
-      cd shadow
-      ./autogen.sh --without-selinux --enable-man
-      grep ENABLE_ config.status
-  - tasks: |
-      cat /proc/self/uid_map
-      cat /proc/self/status
-      systemd-detect-virt
-      cd shadow
-      make
-      make DESTDIR=/tmp/shadow-inst install
-      sudo make install
-      (cd tests; sudo ./run_some || { cat testsuite.log; false; })