Remove marker leftover from copy paste

Author: DavidSpickett

clang/test/Sema/caret-diags-register-variable.cpp

@@ -7,7 +7,7 @@ struct foo {
 //CHECK: {{.*}}: error: bad type for named register variable
 //CHECK-NEXT: {{^}}register struct foo bar asm("esp");
 //CHECK-NEXT: {{^}}         ^{{$}}
-register struct foo bar asm("esp"); // expected-error {{bad type for named register variable}}
+register struct foo bar asm("esp");
 
 //CHECK: {{.*}}: error: register 'edi' unsuitable for global register variables on this target
 //CHECK-NEXT: {{^}}register int r0 asm ("edi");