Bug 1750945 - Remove legacy OldEscapeChars table. r=necko-reviewers,kershaw

Differential Revision: https://phabricator.services.mozilla.com/D189701

xpcom/io/nsEscape.cpp

@@ -293,35 +293,6 @@ static bool dontNeedEscape(uint16_t aChar, uint32_t aFlags) {
                                     : false;
 }
 
-// Temporary static assert to make sure that the rewrite to using
-// `BuildEscapeChars` didn't change the final array in memory.
-// It will be removed in Bug 1750945.
-
-static_assert([]() constexpr {
-  constexpr uint32_t OldEscapeChars[256] =
-      // clang-format off
-//     0      1      2      3      4      5      6      7      8      9      A      B      C      D      E      F
-{
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,  // 0x
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,  // 1x
-       0,132095,     0,131584,132095,     0,132095,131696,132095,132095,132095,132095,132095,132095,132025,131856,  // 2x   !"#$%&'()*+,-./
-  132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,132080,132080,     0,132080,     0,131840,  // 3x  0123456789:;<=>?
-  132080,132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,  // 4x  @ABCDEFGHIJKLMNO
-  132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,132080,   896,132080,   896,132095,  // 5x  PQRSTUVWXYZ[\]^_
-     384,132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,  // 6x  `abcdefghijklmno
-  132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,132095,   896,  1012,   896,132095,     0,  // 7x  pqrstuvwxyz{|}~ DEL
-       0                                                                                                            // 80 to FF are zero
-};
-  // clang-format on
-
-  for (size_t i = 0; i < EscapeChars.size(); ++i) {
-    if (OldEscapeChars[i] != EscapeChars[i]) {
-      return false;
-    }
-  }
-  return true;
-}());
-
 //----------------------------------------------------------------------------------------
 
 /**