Remove quotes from echo commands

.appveyor.yml

@@ -8,7 +8,6 @@ environment:
     CMD_IN_ENV: "cmd /E:ON /V:ON /C .\\appveyor\\run_with_env.cmd"
 
   matrix:
-
     - PYTHON: "C:\\Python38-x64"
       PYTHON_VERSION: "3.8.x"
       PYTHON_ARCH: "64"
@@ -25,23 +24,19 @@ install:
         Where-Object pullRequestId -eq $env:APPVEYOR_PULL_REQUEST_NUMBER)[0].buildNumber) { `
           throw "There are newer queued builds for this pull request, failing early." }
 
-  - ECHO "random debugging stuff"
-  - ps: "ls \"C:\\Program Files\\\""
-  - ps: "ls \"C:\\Program Files (x86)\\\""
-
-  - ECHO "OS version:"
+  - ECHO OS version:
   - ps: "[System.Environment]::OSVersion.Version"
 
-  - ECHO "Filesystem root:"
+  - ECHO Filesystem root:
   - ps: "ls \"C:\\\""
 
-  - ECHO "Filesystem projects root:"
+  - ECHO Filesystem projects root:
   - ps: "ls \"C:\\projects\\\""
 
-  - ECHO "Filesystem pyfa root:"
+  - ECHO Filesystem pyfa root:
   - ps: "ls \"C:\\projects\\$env:APPVEYOR_PROJECT_SLUG\\\""
 
-  - ECHO "Installed SDKs:"
+  - ECHO Installed SDKs:
   - ps: "ls \"C:\\Program Files (x86)\\Windows Kits\\\""
 
   # Prepend newly installed Python to the PATH of this build (this cannot be