fix: exception when calling database

There appears to be a bug in the current version of the MySQL entity
framework implementation where using the string's ".Equals" results in a
"LCASE" command that throws a null reference exception. Since MySQL is not
case sensitive we can simple remove this part of the database calls for
now...

Author: ProgrammingByPermutation

src/Nullinside.Api.Common.AspNetCore/Middleware/BasicAuthenticationHandler.cs

@@ -60,7 +60,7 @@ protected override async Task<AuthenticateResult> HandleAuthenticateAsync() {
         .Include(i => i.Roles)
         .AsNoTracking()
         .FirstOrDefaultAsync(u => !string.IsNullOrWhiteSpace(u.Token) &&
-                                  u.Token.Equals(token, StringComparison.InvariantCultureIgnoreCase) &&
+                                  u.Token == token &&
                                   !u.IsBanned);
 
       if (null == dbUser) {