sdl2-compat: cmake: give OS/2 the boot

SDL Commits
1 
From a95d12ee73a1164c019b7088088a9d09a9213fba Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Wed, 30 Nov 2022 00:32:17 +0100
Subject: [PATCH] cmake: give OS/2 the boot

---
 CMakeLists.txt | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9016774..5bd0c69 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -217,11 +217,6 @@ elseif(WIN32)
     OUTPUT_NAME "SDL2"
     PREFIX ""
   )
-elseif(OS2)
-  set_target_properties(SDL2 PROPERTIES
-    OUTPUT_NAME "SDL2"
-    VERSION "${SDL_VERSION}"
-  )
 else()
   set_target_properties(SDL2 PROPERTIES
     VERSION "${PROJECT_VERSION}"