dwcsdhc: Remove BasicDriverOk from INF (#9)

On latest WDK, INX files with BasicDriverOk fail to verify:

`error 1208: Directive 'BasicDriverOk' not allowed.`

A bit of research indicates that BasicDriverOk was removed from all
driver samples back in March with comment "BasicDriverOk should only be
used in a subset of inbox INFs":
microsoft/Windows-driver-samples#908

A bit more research hints that this flag is used only as a hint for
Windows Update behavior, something along the lines of "this is a generic
driver but that's ok so don't look for a vendor-specific driver to
replace it".

drivers/sd/dwcsdhc/dwcsdhc.inx

@@ -31,7 +31,6 @@ dwcsdhc.sys = 1
 %RKCP%=RKCP,NT$ARCH$
 
 [ControlFlags]
-BasicDriverOk=*
 ExcludeFromSelect=*
 
 ;