Update CMakeLists.txt, remove CMAKE_SIZEOF_VOID_P check

CMakeLists.txt

@@ -54,14 +54,6 @@ macro(copy_files_to_build_dir target dlllist_var)
 	endif()
 endmacro()
 
-# 64-bit check
-if(${CMAKE_SIZEOF_VOID_P} EQUAL 8)
-	message(STATUS "Target is 64-bit")
-	set(SRB2_SYSTEM_BITS 64)
-else()
-	set(SRB2_SYSTEM_BITS 32)
-endif()
-
 # OS macros
 if (UNIX)
 	add_definitions(-DUNIXCOMMON)
@@ -73,9 +65,6 @@ endif()
 
 if(${CMAKE_SYSTEM} MATCHES "Linux")
 	add_definitions(-DLINUX)
-	if(${SRB2_SYSTEM_BITS} EQUAL 64)
-		add_definitions(-DLINUX64)
-	endif()
 endif()
 
 if(${CMAKE_SYSTEM} MATCHES "Darwin")