[NFC] Remove extra semicolon (#14569)

It's caused a build warning when `-Wpedantic` enabled.

Signed-off-by: Wang, Yihan <yihan.wang@intel.com>

clang/lib/Sema/SemaSYCL.cpp

@@ -5067,7 +5067,7 @@ void ConstructFreeFunctionKernel(SemaSYCL &SemaSYCLRef, FunctionDecl *FD) {
 
   Visitor.VisitFunctionParameters(FD, argsSizeChecker, kernel_decl, kernel_body,
                                   int_header, int_footer);
-};
+}
 
 // Figure out the sub-group for the this function.  First we check the
 // attributes, then the global settings.