Remove unnecessary branching

PiperOrigin-RevId: 716301549

Author: blickly

src/com/google/javascript/jscomp/base/format/SimpleFormat.java

@@ -588,11 +588,7 @@ private CharSequence padding(CharSequence source, int startIndex) {
 
     char paddingChar = '\u0020'; // space as padding char.
     if (formatToken.flagZero) {
-      if (formatToken.getConversionType() == 'd') {
-        paddingChar = '0';
-      } else {
-        paddingChar = '0'; // No localized digits for bases other than decimal.
-      }
+      paddingChar = '0';
     } else {
       // if padding char is space, always pad from the start.
       start = 0;