remove redundant properties that have the same as default values

Author: smdn

src/Smdn.Net.MuninNode.Hosting/Smdn.Net.MuninNode.Hosting.csproj

@@ -8,8 +8,6 @@ SPDX-License-Identifier: MIT
     <VersionPrefix>3.1.0</VersionPrefix>
     <VersionSuffix></VersionSuffix>
     <PackageValidationBaselineVersion>3.0.0</PackageValidationBaselineVersion>
-    <RootNamespace/> <!-- empty the root namespace so that the namespace is determined only by the directory name, for code style rule IDE0030 -->
-    <Nullable>enable</Nullable>
     <NoWarn>CS1591;$(NoWarn)</NoWarn> <!-- CS1591: Missing XML comment for publicly visible type or member 'Type_or_Member' -->
   </PropertyGroup>
 

src/Smdn.Net.MuninNode/Smdn.Net.MuninNode.csproj

@@ -8,8 +8,6 @@ SPDX-License-Identifier: MIT
     <VersionPrefix>2.5.0</VersionPrefix>
     <VersionSuffix></VersionSuffix>
     <PackageValidationBaselineVersion>2.0.0</PackageValidationBaselineVersion>
-    <RootNamespace/> <!-- empty the root namespace so that the namespace is determined only by the directory name, for code style rule IDE0130 -->
-    <Nullable>enable</Nullable>
     <NoWarn>CS1591;$(NoWarn)</NoWarn> <!-- CS1591: Missing XML comment for publicly visible type or member 'Type_or_Member' -->
   </PropertyGroup>
 

tests/Smdn.Net.MuninNode.Hosting/Smdn.Net.MuninNode.Hosting.Tests.csproj

@@ -3,11 +3,6 @@ SPDX-FileCopyrightText: 2025 smdn <smdn@smdn.jp>
 SPDX-License-Identifier: MIT
 -->
 <Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <Nullable>enable</Nullable>
-    <RootNamespace/> <!-- empty the root namespace so that the namespace is determined only by the directory name, for code style rule IDE0130 -->
-  </PropertyGroup>
-
   <PropertyGroup>
     <TargetFrameworks Condition=" '$(EnableTargetFrameworkDotNet80)' == 'true' ">net8.0;$(TargetFrameworks)</TargetFrameworks>
     <TargetFrameworks Condition=" '$(EnableTargetFrameworkNetFx)' == 'true' ">$(TargetFrameworks)</TargetFrameworks>

tests/Smdn.Net.MuninNode/Smdn.Net.MuninNode.Tests.csproj

@@ -3,11 +3,6 @@ SPDX-FileCopyrightText: 2021 smdn <smdn@smdn.jp>
 SPDX-License-Identifier: MIT
 -->
 <Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <Nullable>enable</Nullable>
-    <RootNamespace/> <!-- empty the root namespace so that the namespace is determined only by the directory name, for code style rule IDE0130 -->
-  </PropertyGroup>
-
   <PropertyGroup>
     <TargetFrameworks Condition=" '$(EnableTargetFrameworkDotNet80)' == 'true' ">net8.0;$(TargetFrameworks)</TargetFrameworks>
     <TargetFrameworks Condition=" '$(EnableTargetFrameworkNetFx)' == 'true' ">$(TargetFrameworks)</TargetFrameworks>