Revert "[Build] Add XenkoBuildDoc parameter to force TargetFramework …

…even if not specified (seems necessary for older version of Roslyn used in docfx)"

Should not be necessary anymore with docfx 2.47

This reverts commit 35923fa.

sources/targets/Xenko.Core.PreSettings.targets

@@ -45,9 +45,6 @@
     <XenkoRuntimeTargetFrameworks Condition="$(_XenkoPlatforms.Contains(';UWP;'))">$(XenkoRuntimeTargetFrameworks);uap10.0.16299</XenkoRuntimeTargetFrameworks>
     <XenkoRuntimeTargetFrameworks Condition="$(_XenkoPlatforms.Contains(';Android;'))">$(XenkoRuntimeTargetFrameworks);monoandroid81</XenkoRuntimeTargetFrameworks>
     <XenkoRuntimeTargetFrameworks Condition="$(_XenkoPlatforms.Contains(';iOS;'))">$(XenkoRuntimeTargetFrameworks);xamarinios10</XenkoRuntimeTargetFrameworks>
-    <XenkoRuntimeTargetFrameworks>$([MSBuild]::Unescape($(XenkoRuntimeTargetFrameworks.Trim(';'))))</XenkoRuntimeTargetFrameworks>
-    <TargetFrameworks>$(XenkoRuntimeTargetFrameworks)</TargetFrameworks>
-    <TargetFramework Condition="'$(XenkoBuildDoc)' == 'true' And '$(TargetFramework)' == ''">$(TargetFrameworks.Split(';', StringSplitOptions.RemoveEmptyEntries)[0])</TargetFramework>
 
     <XenkoRuntimeIdentifiers Condition="'$(XenkoRuntimeNetStandardNoRuntimeIdentifiers)' != 'true' And '$(TargetFramework)' == 'netstandard2.0' And $(_XenkoPlatforms.Contains(';Windows;'))">$(XenkoRuntimeIdentifiers);win</XenkoRuntimeIdentifiers>
     <XenkoRuntimeIdentifiers Condition="'$(XenkoRuntimeNetStandardNoRuntimeIdentifiers)' != 'true' And '$(TargetFramework)' == 'netstandard2.0' And $(_XenkoPlatforms.Contains(';Linux;'))">$(XenkoRuntimeIdentifiers);linux</XenkoRuntimeIdentifiers>
@@ -65,12 +62,12 @@
     <!-- Otherwise compute fallback -->
     <XenkoRuntimeIdentifier Condition="'$(XenkoRuntimeIdentifiers)' != '' And '$(XenkoRuntimeIdentifier)' == ''">$(XenkoRuntimeIdentifiers.Split(';', StringSplitOptions.RemoveEmptyEntries)[0])</XenkoRuntimeIdentifier>
 
+    <XenkoRuntimeTargetFrameworks>$([MSBuild]::Unescape($(XenkoRuntimeTargetFrameworks.Trim(';'))))</XenkoRuntimeTargetFrameworks>
     <XenkoRuntimeIdentifiers>$([MSBuild]::Unescape($(XenkoRuntimeIdentifiers.Trim(';'))))</XenkoRuntimeIdentifiers>
 
+    <TargetFrameworks>$(XenkoRuntimeTargetFrameworks)</TargetFrameworks>
     <RuntimeIdentifiers Condition="'$(XenkoRuntimeIdentifiers)' != ''">$(XenkoRuntimeIdentifiers)</RuntimeIdentifiers>
 
-    <RuntimeIdentifier Condition="'$(XenkoBuildDoc)' == 'true' And '$(RuntimeIdentifier)' == ''">$(XenkoRuntimeIdentifier)</RuntimeIdentifier>
-
     <ExtrasBuildEachRuntimeIdentifier Condition="'$(RuntimeIdentifiers)' != ''">true</ExtrasBuildEachRuntimeIdentifier>
 
     <!-- UpToDate check doesn't work with multi-TFM projects! https://github.com/dotnet/project-system/issues/2487 -->