Remove official Appveyor support (#2386)

docs/data/projects.schema.json

@@ -18,7 +18,6 @@
           "enum": [
             "github",
             "travisci",
-            "appveyor",
             "circleci",
             "gitlab",
             "cirrusci",

docs/data/projects.yml

@@ -4,7 +4,7 @@
 # stars: GitHub repo (optional, if different from package, such as for Twisted)
 # pypi: The pypi name, if different from the GitHub package name
 # os: Operating system list, [windows, apple, linux] (optional)
-# ci: [appveyor, github, azurepipelines, circleci, gitlab, travisci, cirrusci] (optional)
+# ci: [github, azurepipelines, circleci, gitlab, travisci, cirrusci] (optional)
 # notes: (text, optional)
 
 - name: abess
@@ -19,11 +19,11 @@
   ci: [github]
   os: [windows, apple, linux]
 
-- name: pyinstrument_cext
-  gh: joerick/pyinstrument_cext
-  ci: [travisci, appveyor]
+- name: pyinstrument
+  gh: joerick/pyinstrument
+  ci: [github]
   os: [windows, apple, linux]
-  notes: A simple C extension, without external dependencies
+  notes: Python profiler with a C extension. No external dependencies.
 
 - name: websockets
   gh: python-websockets/websockets
@@ -182,7 +182,7 @@
 
 - name: python-rapidjson
   gh: python-rapidjson/python-rapidjson
-  ci: [travisci, gitlab, appveyor]
+  ci: [travisci, gitlab]
   os: [windows, linux]
 
 - name: jq.py

docs/data/readme_icons/appveyor.svg

@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" role="img" viewBox="0 0 24 24" width="16px" fill="#606060"><title>AppVeyor icon</title><path d="M 12,0 C 18.6,0 24,5.4 24,12 24,18.6 18.6,24 12,24 5.4,24 0,18.6 0,12 0,5.4 5.4,0 12,0 Z m 2.94,14.34 C 16.26,12.66 16.08,10.26 14.4,9 12.78,7.74 10.38,8.04 9,9.72 7.68,11.4 7.86,13.8 9.54,15.06 c 1.68,1.26 4.08,0.96 5.4,-0.72 z m -6.42,7.8 c 0.72,0.3 2.28,0.6 3.06,0.6 l 5.22,-7.56 c 1.68,-2.52 1.26,-5.94 -1.08,-7.8 -2.1,-1.68 -5.04,-1.62 -7.14,0 l -7.26,5.58 c 0.18,1.92 0.72,2.88 0.72,2.94 l 4.14,-4.5 c -0.3,1.98 0.42,4.02 2.1,5.28 1.44,1.14 3.18,1.44 4.86,1.08 z"/></svg>