BaseTools/UPT: Porting UPT Tool from Python2 to Python3

Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

BaseTools/Source/Python/UPT/Core/IpiDb.py

@@ -44,7 +44,7 @@ class IpiDatabase(object):
         Dir = os.path.dirname(DbPath)
         if not os.path.isdir(Dir):
             os.mkdir(Dir)
-        self.Conn = sqlite3.connect(unicode(DbPath), isolation_level='DEFERRED')
+        self.Conn = sqlite3.connect(DbPath, isolation_level='DEFERRED')
         self.Conn.execute("PRAGMA page_size=4096")
         self.Conn.execute("PRAGMA synchronous=OFF")
         self.Cur = self.Conn.cursor()