CMakeLists: Resolve MSVC build failures

Prevents the compiler tripping up about Windows headers.

src/CMakeLists.txt

@@ -46,7 +46,6 @@ if (MSVC)
         # Warnings
         /W3
         /we4547 # 'operator' : operator before comma has no effect; expected operator with side-effect
-        /we4548 # Expression before comma has no effect; expected expression with side-effect
         /we4549 # 'operator1': operator before comma has no effect; did you intend 'operator2'?
         /we4555 # Expression has no effect; expected expression with side-effect
         /we4834 # Discarding return value of function with 'nodiscard' attribute