ci: remove aarch64 builds from CircleCI

Arm builds are now down with Travis-CI instead, so it is not necessary
to use dockcross on CircleCI. Also switch to using the graviton2 based
arm64 builder instances on Travis-CI.

Author: AWSjswinney

.circleci/config.yml

@@ -36,11 +36,6 @@ references:
       - image: dockcross/manylinux1-x86
     <<: *ci_steps
 
-  aarch64_build_job: &aarch64_build_job
-    docker:
-      - image: dockcross/manylinux2014-aarch64
-    <<: *ci_steps
-
   no_filters: &no_filters
     filters:
       tags:
@@ -60,10 +55,6 @@ jobs:
   manylinux-x86_cp37-cp37m:
     <<: *x86_build_job
 
-  # aarch64
-  manylinux-aarch64_cp37-cp37m:
-    <<: *aarch64_build_job
-
   deploy-master:
     docker:
       - image: circleci/python:3.7.0-stretch
@@ -105,9 +96,6 @@ workflows:
           <<: *no_filters
       - manylinux-x86_cp37-cp37m:
           <<: *no_filters
-      # aarch64
-      - manylinux-aarch64_cp37-cp37m:
-          <<: *no_filters
 
       - deploy-master:
           requires:
@@ -117,8 +105,6 @@ workflows:
             # x86
             - manylinux-x86_cp27-cp27mu
             - manylinux-x86_cp37-cp37m
-            # aarch64
-            - manylinux-aarch64_cp37-cp37m
           filters:
             branches:
               only: master
@@ -130,8 +116,6 @@ workflows:
             # x86
             - manylinux-x86_cp27-cp27mu
             - manylinux-x86_cp37-cp37m
-            # aarch64
-            - manylinux-aarch64_cp37-cp37m
           filters:
             tags:
               only: /^[0-9]+(\.[0-9]+)*(\.post[0-9]+)?$/

.travis.yml

@@ -19,7 +19,7 @@ matrix:
         - PYTHON_VERSION=2.7.15
 
     - os: linux
-      arch: arm64
+      arch: arm64-graviton2
       virt: vm
       group: edge
       dist: focal