SDL: Remove pkg-config prefix hack

https://github.com/libsdl-org/SDL/commit/4708c6bb96c0df149643e9e00e89e41e622b7192

From 4708c6bb96c0df149643e9e00e89e41e622b7192 Mon Sep 17 00:00:00 2001
From: Ivan Epifanov <[EMAIL REDACTED]>
Date: Sun, 14 Feb 2021 11:52:43 +0300
Subject: [PATCH] Remove pkg-config prefix hack

---
 CMakeLists.txt | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e7641547f..228a5da4c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2249,15 +2249,7 @@ if(NOT CMAKE_HOST_WIN32)
 endif()
 if(NOT WINDOWS OR CYGWIN)
 
-  if(VITA)
-    if(DOLCESDK)
-      set(prefix "\${DOLCESDK}/arm-dolce-eabi")
-    else()
-      set(prefix "\${VITASDK}/arm-vita-eabi")
-    endif()
-  else()
-    set(prefix ${CMAKE_INSTALL_PREFIX})
-  endif()
+  set(prefix ${CMAKE_INSTALL_PREFIX})
 
   set(exec_prefix "\${prefix}")
   set(libdir "\${exec_prefix}/lib${LIB_SUFFIX}")