calling SQLRemoveDriver does not update the lpdwUsageCount on linux

[ameybarve15]

SQLRemoveDriver returns true, also I checked entry into odbcinst.ini and driver entry is also removed.
Here's my code : It prints Usage count is 1.

DWORD nUsageCount;
BOOL bRemoveDSNs = false;
if (!SQLRemoveDriver("ODBCDRIVERNAME",bRemoveDSNs ,&nUsageCount)) {
printf("Error \n");
}
else {
printf( "Usage count is %d.\n", (int)nUsageCount );
}

I also observed that SQLInstallDriverEx does not increment nUsageCount past 1, irrespective of how many times you call SQLInstallDriverEx. Why is that So?