#50870 Enabling Microsoft.Extensions.Configuration.Xml tests on android (#74575)

src/libraries/Microsoft.Extensions.Configuration.Xml/tests/XmlConfigurationExtensionsTest.cs

@@ -9,7 +9,6 @@ namespace Microsoft.Extensions.Configuration.Xml.Test
     public class XmlConfigurationExtensionsTest
     {
         [Fact]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/50870", TestPlatforms.Android)]
         public void AddXmlFile_ThrowsIfFileDoesNotExistAtPath()
         {
             var config = new ConfigurationBuilder().AddXmlFile("NotExistingConfig.xml");

src/libraries/Microsoft.Extensions.Configuration.Xml/tests/XmlConfigurationTest.cs

@@ -561,7 +561,6 @@ public void SupportAndIgnoreProcessingInstructions()
         }
 
         [Fact]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/50870", TestPlatforms.Android)]
         public void ThrowExceptionWhenFindDTD()
         {
             var xml =
@@ -690,7 +689,6 @@ public void ThrowExceptionWhenKeyIsDuplicatedWithDifferentCasing()
         }
 
         [Fact]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/50870", TestPlatforms.Android)]
         public void XmlConfiguration_Throws_On_Missing_Configuration_File()
         {
             var ex = Assert.Throws<FileNotFoundException>(() => new ConfigurationBuilder().AddXmlFile("NotExistingConfig.xml", optional: false).Build());