Remove GLSLANG_WEB and GLSLANG_WEB_DEVEL

This CL removes the GLSLANG_WEB and GLSLANG_WEB_DEVEL
cmake build options and their usage in the codebase.

Issue #2958

SPIRV/Logger.cpp

@@ -32,8 +32,6 @@
 // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 // POSSIBILITY OF SUCH DAMAGE.
 
-#ifndef GLSLANG_WEB
-
 #include "Logger.h"
 
 #include <algorithm>
@@ -68,5 +66,3 @@ std::string SpvBuildLogger::getAllMessages() const {
 }
 
 } // end spv namespace
-
-#endif