Remove redundant check from parse_number.exp

A user on irc pointed out that parse_number.exp has a redundant check.
This patch removes the duplicate.


diff --git a/gdb/testsuite/gdb.base/parse_number.exp b/gdb/testsuite/gdb.base/parse_number.exp
index 648c34f..64ce14c 100644
--- a/gdb/testsuite/gdb.base/parse_number.exp
+++ b/gdb/testsuite/gdb.base/parse_number.exp
@@ -110,8 +110,6 @@
 	    return [list "i64" $n]
 	} elseif { [fits_in_type $n 128 u] } {
 	    return [list "i128" $n]
-	} elseif { [fits_in_type $n 128 u] } {
-	    return [list "i128" $n]
 	} else {
 	    # Overflow.
 	    return [list $re_overflow $re_overflow]