remove android 26 manual install for ci

appveyor.yml

@@ -1,5 +1,3 @@
-init:
-  - ps: iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/bitwarden/mobile/master/install-android26.ps1'))
 before_build:
   - nuget restore
   - IF DEFINED keystore_dec_secret nuget install secure-file -ExcludeVersion

install-android26.ps1

@@ -1,30 +0,0 @@
-$AndroidToolPath = "${env:ProgramFiles(x86)}\Android\android-sdk\tools\android"
-
-Function Get-AndroidSDKs() { 
-    $output = & $AndroidToolPath list sdk --all 
-    $sdks = $output |% { 
-        if ($_ -match '(?<index>\d+)- (?<sdk>.+), revision (?<revision>[\d\.]+)') { 
-            $sdk = New-Object PSObject 
-            Add-Member -InputObject $sdk -MemberType NoteProperty -Name Index -Value $Matches.index 
-            Add-Member -InputObject $sdk -MemberType NoteProperty -Name Name -Value $Matches.sdk 
-            Add-Member -InputObject $sdk -MemberType NoteProperty -Name Revision -Value $Matches.revision 
-            $sdk 
-        } 
-    } 
-    $sdks 
-}
-
-Function Install-AndroidSDK() { 
-    [CmdletBinding()] 
-    Param( 
-        [Parameter(Mandatory=$true, Position=0)] 
-        [PSObject[]]$sdks 
-    )
-    $sdkIndexes = $sdks |% { $_.Index } 
-    $sdkIndexArgument = [string]::Join(',', $sdkIndexes) 
-    Echo 'y' | & $AndroidToolPath update sdk -u -a -t $sdkIndexArgument 
-}
-
-# install android 26
-$sdks = Get-AndroidSDKs |? { $_.name -like 'sdk platform*API 26*' } 
-Install-AndroidSDK -sdks $sdks