Removed GSL since we did not actually rely on it

LICENSE-3RD-PARTY

@@ -12,7 +12,6 @@ This software is based on the following MIT licensed projects:
 - Plog                             : Copyright (c) 2022 Sergey Podobry
 - pugixml                          : Copyright (c) 2006-2023 Arseny Kapoulkine
 - ValveFileVDF                     : Copyright (c) Matthias Moeller 2016 [email protected]
-- Guidelines Support Library (GSL) : Copyright (c) 2015 Microsoft Corporation. All rights reserved.
 - HybridDetect                     : Copyright (c) 2017 Intel
 
 ---

README.md

@@ -75,7 +75,6 @@ SKIF supports detecting and launching games from the following platforms:
 * Uses [Plog](https://github.com/SergiusTheBest/plog), licensed under [MIT](https://github.com/SergiusTheBest/plog/blob/master/LICENSE).
 * Uses [pugixml](https://pugixml.org/), licensed under [MIT](https://pugixml.org/license.html).
 * Uses [ValveFileVDF](https://github.com/TinyTinni/ValveFileVDF), licensed under [MIT](https://github.com/TinyTinni/ValveFileVDF/blob/master/LICENSE).
-* Uses [Guidelines Support Library (GSL)](https://github.com/microsoft/GSL), licensed under [MIT](https://github.com/microsoft/GSL/blob/main/LICENSE).
 * Uses [TextFlowCpp](https://github.com/catchorg/textflowcpp), licensed under [BSL-1.0](https://github.com/catchorg/textflowcpp/blob/master/LICENSE.txt).
 * Uses [HybridDetect](https://github.com/GameTechDev/HybridDetect/), licensed under [MIT](https://github.com/GameTechDev/HybridDetect/blob/main/LICENSE.md).
 * Uses code from [Custom Resolution Utility (CRU)](https://www.monitortests.com/forum/Thread-Custom-Resolution-Utility-CRU), licensed under a [custom license](https://github.com/SpecialKO/SKIF/blob/master/src/utility/drvreset.cpp).

SKIF.vcxproj

@@ -544,15 +544,6 @@
   </ItemGroup>
   <ItemGroup>
     <None Include="packages.config" />
-    <None Include="packages_misc\gsl\gsl" />
-    <None Include="packages_misc\gsl\gsl_algorithm" />
-    <None Include="packages_misc\gsl\gsl_assert" />
-    <None Include="packages_misc\gsl\gsl_byte" />
-    <None Include="packages_misc\gsl\gsl_util" />
-    <None Include="packages_misc\gsl\multi_span" />
-    <None Include="packages_misc\gsl\pointers" />
-    <None Include="packages_misc\gsl\span" />
-    <None Include="packages_misc\gsl\string_span" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">

SKIF.vcxproj.filters

@@ -82,9 +82,6 @@
     <Filter Include="Header Files\Packages_Misc">
       <UniqueIdentifier>{9fb4cf13-f304-4e2c-a64a-0fb28fa175f2}</UniqueIdentifier>
     </Filter>
-    <Filter Include="Header Files\Packages_Misc\GSL">
-      <UniqueIdentifier>{995078a9-45f5-4bd8-8760-dec8aed20f6d}</UniqueIdentifier>
-    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="include\imgui\imconfig.h">
@@ -379,32 +376,5 @@
   </ItemGroup>
   <ItemGroup>
     <None Include="packages.config" />
-    <None Include="packages_misc\gsl\gsl">
-      <Filter>Header Files\Packages_Misc\GSL</Filter>
-    </None>
-    <None Include="packages_misc\gsl\gsl_algorithm">
-      <Filter>Header Files\Packages_Misc\GSL</Filter>
-    </None>
-    <None Include="packages_misc\gsl\gsl_assert">
-      <Filter>Header Files\Packages_Misc\GSL</Filter>
-    </None>
-    <None Include="packages_misc\gsl\gsl_byte">
-      <Filter>Header Files\Packages_Misc\GSL</Filter>
-    </None>
-    <None Include="packages_misc\gsl\gsl_util">
-      <Filter>Header Files\Packages_Misc\GSL</Filter>
-    </None>
-    <None Include="packages_misc\gsl\multi_span">
-      <Filter>Header Files\Packages_Misc\GSL</Filter>
-    </None>
-    <None Include="packages_misc\gsl\pointers">
-      <Filter>Header Files\Packages_Misc\GSL</Filter>
-    </None>
-    <None Include="packages_misc\gsl\span">
-      <Filter>Header Files\Packages_Misc\GSL</Filter>
-    </None>
-    <None Include="packages_misc\gsl\string_span">
-      <Filter>Header Files\Packages_Misc\GSL</Filter>
-    </None>
   </ItemGroup>
 </Project>