[CONJ-659] correction of ATOI parsing to permit resultset.getDate() on

String data with timestamps format (cherry picked from commit 0671c92)

Author: rusher

src/main/java/org/mariadb/jdbc/internal/com/read/resultset/rowprotocol/TextRowProtocol.java

@@ -460,10 +460,6 @@ public Date getInternalDate(ColumnInformation columnInfo, Calendar cal, TimeZone
 
  switch (columnInfo.getColumnType()) {
  case DATE:
- case VARCHAR:
- case VARSTRING:
- case STRING:
-
  int[] datePart = new int[]{0,0,0};
  int partIdx = 0;
  for (int begin = pos; begin < pos + length; begin++) {