Remove 'no errors' log

This log is redundant because "success" will already be printed at the
end if the parsing has succeeded.

Bug: none
Test: validatekeymaps data/keyboards/Vendor_045e_Product_0b0c.kl
Change-Id: I6e25b04d142d137101a6a9cca6e837ad35edb619

tools/validatekeymaps/Main.cpp

@@ -137,7 +137,6 @@ static bool validateFile(const char* filename) {
     }
     }
 
-    log("No errors.\n\n");
     return true;
 }