Prefer 64-bit ASF

ASF is AnyCPU binary which means it'll run fine on both 32-bit as well as 64-bit OSes.
Up to today 32-bit runtime was preferred for ASF, as it uses less memory and can be faster than 64-bit equivalent.
However, in very busy environments it's easily possible for ASF to require even more than 2 GB of memory, and in addition to that extending our userspace to 64-bit can bring benefits on more modern setups.
Therefore, keep being compatible on both 32-bit and 64-bit OSes, but on 64-bit ones use actual 64-bit runtime instead of preferred 32-bit one.
In addition to that, optimize some unused references and other things while we're at it.

ArchiSteamFarm/ArchiSteamFarm.csproj

@@ -38,8 +38,9 @@
     <OutputPath>bin\Debug\</OutputPath>
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>3</WarningLevel>
+    <WarningLevel>4</WarningLevel>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -53,7 +54,7 @@
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
     <DocumentationFile>
     </DocumentationFile>
-    <Prefer32Bit>true</Prefer32Bit>
+    <Prefer32Bit>false</Prefer32Bit>
     <GenerateSerializationAssemblies>Auto</GenerateSerializationAssemblies>
     <UseVSHostingProcess>false</UseVSHostingProcess>
   </PropertyGroup>
@@ -95,18 +96,14 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="System" />
-    <Reference Include="System.Configuration" />
     <Reference Include="System.Configuration.Install" />
     <Reference Include="System.Core" />
-    <Reference Include="System.Data" />
     <Reference Include="System.IO.Compression" />
-    <Reference Include="System.Runtime.Serialization" />
     <Reference Include="System.Security" />
     <Reference Include="System.ServiceModel" />
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System.Net.Http" />
     <Reference Include="System.ServiceProcess" />
-    <Reference Include="System.Transactions" />
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>

ConfigGenerator/ConfigGenerator.csproj

@@ -25,6 +25,7 @@
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -36,6 +37,7 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <PropertyGroup>
     <ApplicationIcon>cirno.ico</ApplicationIcon>

GUI/GUI.csproj

@@ -24,15 +24,18 @@
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
-    <DebugType>pdbonly</DebugType>
+    <DebugType>none</DebugType>
     <Optimize>true</Optimize>
     <OutputPath>bin\Release\</OutputPath>
-    <DefineConstants>TRACE</DefineConstants>
+    <DefineConstants>
+    </DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <PropertyGroup>
     <ApplicationIcon>cirno.ico</ApplicationIcon>
@@ -63,18 +66,10 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="System" />
-    <Reference Include="System.Configuration" />
     <Reference Include="System.Core" />
     <Reference Include="System.IO.Compression" />
-    <Reference Include="System.Runtime.Serialization" />
     <Reference Include="System.Security" />
-    <Reference Include="System.ServiceModel" />
-    <Reference Include="System.Transactions" />
-    <Reference Include="System.Xml.Linq" />
-    <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="Microsoft.CSharp" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.Deployment" />
     <Reference Include="System.Drawing" />
     <Reference Include="System.Net.Http" />
     <Reference Include="System.Windows.Forms" />