Fixed compiler option warning for 64-bit builds on Visual Studio 2008

VisualC/SDL/SDL_VS2008.vcproj

@@ -140,7 +140,6 @@
 				PreprocessorDefinitions="_DEBUG;_WINDOWS"
 				RuntimeLibrary="2"
 				BufferSecurityCheck="false"
-				EnableEnhancedInstructionSet="1"
 				WarningLevel="3"
 				DebugInformationFormat="1"
 				OmitDefaultLibName="true"
@@ -305,7 +304,6 @@
 				PreprocessorDefinitions="NDEBUG;_WINDOWS"
 				RuntimeLibrary="2"
 				BufferSecurityCheck="false"
-				EnableEnhancedInstructionSet="1"
 				WarningLevel="3"
 				DebugInformationFormat="3"
 				OmitDefaultLibName="true"

VisualC/SDLmain/SDLmain_VS2008.vcproj

@@ -117,7 +117,6 @@
 				StringPooling="true"
 				RuntimeLibrary="2"
 				BufferSecurityCheck="false"
-				EnableEnhancedInstructionSet="1"
 				WarningLevel="3"
 				DebugInformationFormat="1"
 				OmitDefaultLibName="true"
@@ -249,7 +248,6 @@
 				PreprocessorDefinitions="WIN32,_DEBUG,_WINDOWS"
 				RuntimeLibrary="2"
 				BufferSecurityCheck="false"
-				EnableEnhancedInstructionSet="1"
 				WarningLevel="3"
 				DebugInformationFormat="1"
 				OmitDefaultLibName="true"

VisualC/SDLtest/SDLtest_VS2008.vcproj

@@ -117,7 +117,6 @@
 				StringPooling="true"
 				RuntimeLibrary="2"
 				BufferSecurityCheck="false"
-				EnableEnhancedInstructionSet="1"
 				WarningLevel="3"
 				DebugInformationFormat="1"
 				OmitDefaultLibName="true"
@@ -249,7 +248,6 @@
 				PreprocessorDefinitions="WIN32,_DEBUG,_WINDOWS"
 				RuntimeLibrary="2"
 				BufferSecurityCheck="false"
-				EnableEnhancedInstructionSet="1"
 				WarningLevel="3"
 				DebugInformationFormat="1"
 				OmitDefaultLibName="true"