[ci] Remove macOS from test matrix again

Don't use macOS for now, it is currently unstable, otherwise slow.

.github/workflows/tests.yaml

@@ -13,7 +13,12 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: ['ubuntu-latest', 'macos-latest']
+        os: [
+          'ubuntu-latest',
+
+          # Don't use macOS for now, it is currently unstable, otherwise slow. -- 2022-04-19, amo
+          # 'macos-latest',
+        ]
         python-version: ['2.7']
 
     defaults:
@@ -69,7 +74,12 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: ['ubuntu-latest', 'macos-latest']
+        os: [
+          'ubuntu-latest',
+
+          # Don't use macOS for now, it is currently unstable, otherwise slow. -- 2022-04-19, amo
+          # 'macos-latest',
+        ]
         node-version: ['11']
 
     defaults:

CHANGES.rst

@@ -15,7 +15,6 @@ Development
 - [ui] EPO/OPS: Support CPCI classifications
 - [ui] Fix dependencies: Upgrade Moment.js and Async
 - [ci] Add CI/GHA configuration
-- [ci] Add macOS to test matrix
 - [qa] Switch test framework from ``nose`` to ``pytest``
 - [qa] Improve Python test harness
 - [mw] Fix getting PDF documents and drawings from USPTO. Thanks, @aghster!