Revert "Fix code for Android"

This reverts commit 7a91fbebd9.

togl/linuxwin/glentrypoints.cpp

@@ -43,7 +43,7 @@
 #include "tier1.h"
 #include "tier2/tier2.h"
 
-#if defined(_LINUX) && !defined(__ANDROID__)
+#ifdef _LINUX
 #include <GL/glx.h>
 #endif
 
@@ -296,7 +296,7 @@ static bool CheckOpenGLExtension_internal(const char *ext, const int coremajor,
 				return false;
 			}
 		}
-#elif !defined ( OSX ) && !defined( __ANDROID__ )
+#elif !defined ( OSX )
 		if (!ptr)
 		{
 			static CDynamicFunctionOpenGL< true, Display *( APIENTRY *)( ), Display* > glXGetCurrentDisplay("glXGetCurrentDisplay");