diff --git a/XlsxToHtmlConverter/Converter.cs b/XlsxToHtmlConverter/Converter.cs
index ad7019e..3ea65b2 100644
--- a/XlsxToHtmlConverter/Converter.cs
+++ b/XlsxToHtmlConverter/Converter.cs
@@ -6,7 +6,6 @@
 using DocumentFormat.OpenXml;
 using DocumentFormat.OpenXml.Packaging;
 using DocumentFormat.OpenXml.Spreadsheet;
-using System.Runtime.CompilerServices;
 
 namespace XlsxToHtmlConverter
 {
diff --git a/XlsxToHtmlConverter/XlsxToHtmlConverter.csproj b/XlsxToHtmlConverter/XlsxToHtmlConverter.csproj
index 5357e92..5c4f3fd 100644
--- a/XlsxToHtmlConverter/XlsxToHtmlConverter.csproj
+++ b/XlsxToHtmlConverter/XlsxToHtmlConverter.csproj
@@ -14,30 +14,6 @@
     <PackageLicenseFile>MIT License.txt</PackageLicenseFile>
   </PropertyGroup>
 
-  <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|net5.0|AnyCPU'">
-    <NoWarn />
-  </PropertyGroup>
-
-  <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Release|net5.0|AnyCPU'">
-    <NoWarn />
-  </PropertyGroup>
-
-  <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|netcoreapp3.0|AnyCPU'">
-    <NoWarn />
-  </PropertyGroup>
-
-  <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Release|netcoreapp3.0|AnyCPU'">
-    <NoWarn />
-  </PropertyGroup>
-
-  <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|netstandard2.0|AnyCPU'">
-    <NoWarn />
-  </PropertyGroup>
-
-  <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Release|netstandard2.0|AnyCPU'">
-    <NoWarn />
-  </PropertyGroup>
-
   <ItemGroup>
     <PackageReference Include="DocumentFormat.OpenXml" Version="[2.7.1,)" />
   </ItemGroup>