Revert "[Mono] Skip flaky android tests (#61460)" (#61771)

This reverts commit 8ad84e8.

Author: simonrozsival

src/libraries/System.Net.Ping/tests/FunctionalTests/UnixPingUtilityTests.cs

@@ -26,7 +26,6 @@ public class UnixPingUtilityTests
         [InlineData(1000)]
         [InlineData(1500)]
         [PlatformSpecific(TestPlatforms.AnyUnix)]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/61343", TestPlatforms.Android)]
         public static void TimeoutIsRespected(int timeout)
         {
             Process p = ConstructPingProcess(IPAddress.Parse(TestSettings.UnreachableAddress), 50, timeout);

src/libraries/System.Net.Sockets/tests/FunctionalTests/SendTo.cs

@@ -64,7 +64,6 @@ public async Task NullEndpoint_Throws_ArgumentException()
         }
 
         [Fact]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/61343", TestPlatforms.Android)]
         public async Task Datagram_UDP_ShouldImplicitlyBindLocalEndpoint()
         {
             using var socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
@@ -85,7 +84,6 @@ public async Task Datagram_UDP_ShouldImplicitlyBindLocalEndpoint()
         }
 
         [Fact]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/61343", TestPlatforms.Android)]
         public async Task Datagram_UDP_AccessDenied_Throws_DoesNotBind()
         {
             IPEndPoint invalidEndpoint = new IPEndPoint(IPAddress.Broadcast, 1234);

src/libraries/System.Net.Sockets/tests/FunctionalTests/SocketOptionNameTest.cs

@@ -51,7 +51,6 @@ public void ReuseUnicastPort_CreateSocketSetOption()
         }
 
         [Fact]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/61343", TestPlatforms.Android)]
         public void MulticastOption_CreateSocketSetGetOption_GroupAndInterfaceIndex_SetSucceeds_GetThrows()
         {
             int interfaceIndex = 0;
@@ -66,7 +65,6 @@ public void MulticastOption_CreateSocketSetGetOption_GroupAndInterfaceIndex_SetS
         }
 
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsNotWindowsNanoNorServerCore))] // Skip on Nano: https://github.com/dotnet/runtime/issues/26286
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/61343", TestPlatforms.Android)]
         public async Task MulticastInterface_Set_AnyInterface_Succeeds()
         {
             // On all platforms, index 0 means "any interface"

src/libraries/System.Net.Sockets/tests/FunctionalTests/UdpClientTest.cs

@@ -439,7 +439,6 @@ public void Connect_InvalidArguments_Throws()
         }
 
         [Fact]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/61343", TestPlatforms.Android)]
         public async Task ConnectAsync_StringHost_Success()
         {
             using (var c = new UdpClient())
@@ -449,7 +448,6 @@ public async Task ConnectAsync_StringHost_Success()
         }
 
         [Fact]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/61343", TestPlatforms.Android)]
         public async Task ConnectAsync_IPAddressHost_Success()
         {
             using (var c = new UdpClient())
@@ -459,7 +457,6 @@ public async Task ConnectAsync_IPAddressHost_Success()
         }
 
         [Fact]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/61343", TestPlatforms.Android)]
         public void Connect_StringHost_Success()
         {
             using (var c = new UdpClient())
@@ -469,7 +466,6 @@ public void Connect_StringHost_Success()
         }
 
         [Fact]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/61343", TestPlatforms.Android)]
         public void Connect_IPAddressHost_Success()
         {
             using (var c = new UdpClient())