build/CI/packaging: remove EL 6 (EOL)

Author: akopytov

.travis.yml

@@ -32,7 +32,6 @@ env:
       - TARGET=distcheck
       - TARGET=test
       - TARGET=coverage
-      - OS=el DIST=6
       - OS=el DIST=7
       - OS=el DIST=8
       - OS=fedora DIST=32
@@ -52,8 +51,6 @@ env:
 
 matrix:
   exclude:
-    - env: OS=el DIST=6
-      compiler: clang
     - env: OS=el DIST=7
       compiler: clang
     - env: OS=el DIST=8
@@ -102,10 +99,6 @@ matrix:
       arch: arm64
     - env: OS=debian DIST=sid ARCH=i386
       arch: arm64
-    - env: OS=el DIST=6
-      arch: arm64
-    - env: OS=el DIST=6
-      os: osx
     - env: OS=el DIST=7
       os: osx
     - env: OS=el DIST=8

scripts/buildpack.sh

@@ -47,7 +47,6 @@ PACKAGECLOUD_EXTRA_ARGS=${PACKAGECLOUD_EXTRA_ARGS:-}
 PACKPACK_REPO=${PACKPACK_REPO:-akopytov/packpack}
 
 distros_x86_64=(
-    "el 6 x86_64"
     "el 7 x86_64"
     "el 8 x86_64"
     "fedora 32 x86_64"