Revert "Fixing NullReferenceException issue with SqlDataAdapter (dotnet#3749)" (dotnet#3854)

This reverts commit c23fed6.

Author: apoorvdeshmukh

src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/SqlCommand.Encryption.cs

@@ -1293,7 +1293,7 @@ private SqlDataReader TryFetchInputParameterEncryptionInfo(
                     // not present as the rpcName, as is the case with non-_batchRPCMode. So
                     // input parameters start at parameters[1]. parameters[0] is the actual
                     // T-SQL Statement. rpcName is sp_executesql.
-                    if (_RPCList[i].systemParams != null && _RPCList[i].systemParams.Length > 1)
+                    if (_RPCList[i].systemParams.Length > 1)
                     {
                         _RPCList[i].needsFetchParameterEncryptionMetadata = true;
 

src/Microsoft.Data.SqlClient/tests/ManualTests/AlwaysEncrypted/SqlDataAdapterBatchUpdateTests.cs

@@ -12,9 +12,6 @@
     <OutputPath>$(BinFolder)$(Configuration).$(Platform).$(AssemblyName)</OutputPath>
     <IsTestProject>true</IsTestProject>
   </PropertyGroup>
-  <ItemGroup Condition="'$(TestSet)' == 'AE'">
-    <Compile Include="AlwaysEncrypted\SqlDataAdapterBatchUpdateTests.cs" />
-  </ItemGroup>
   <ItemGroup Condition="'$(TestSet)' == '' or '$(TestSet)' == 'AE'">
     <Compile Include="AlwaysEncrypted\ConversionTests.cs" />
     <Compile Include="AlwaysEncrypted\ExceptionsGenericError.cs" />