diff --git a/src/backend/utils/mb/Unicode/utf8_to_ALT.map b/src/backend/utils/mb/Unicode/utf8_to_ALT.map
deleted file mode 100644
index 2aba0c5a9b9c7f8905d73e3a14f6ef369938a165..0000000000000000000000000000000000000000
--- a/src/backend/utils/mb/Unicode/utf8_to_ALT.map
+++ /dev/null
@@ -1,130 +0,0 @@
-static pg_utf_to_local ULmap_ALT[ 128 ] = {
-  {0xc2a0, 0x00ff},
-  {0xc2a4, 0x00fd},
-  {0xc2b0, 0x00f8},
-  {0xc2b7, 0x00fa},
-  {0xd081, 0x00f0},
-  {0xd084, 0x00f2},
-  {0xd087, 0x00f4},
-  {0xd08e, 0x00f6},
-  {0xd090, 0x0080},
-  {0xd091, 0x0081},
-  {0xd092, 0x0082},
-  {0xd093, 0x0083},
-  {0xd094, 0x0084},
-  {0xd095, 0x0085},
-  {0xd096, 0x0086},
-  {0xd097, 0x0087},
-  {0xd098, 0x0088},
-  {0xd099, 0x0089},
-  {0xd09a, 0x008a},
-  {0xd09b, 0x008b},
-  {0xd09c, 0x008c},
-  {0xd09d, 0x008d},
-  {0xd09e, 0x008e},
-  {0xd09f, 0x008f},
-  {0xd0a0, 0x0090},
-  {0xd0a1, 0x0091},
-  {0xd0a2, 0x0092},
-  {0xd0a3, 0x0093},
-  {0xd0a4, 0x0094},
-  {0xd0a5, 0x0095},
-  {0xd0a6, 0x0096},
-  {0xd0a7, 0x0097},
-  {0xd0a8, 0x0098},
-  {0xd0a9, 0x0099},
-  {0xd0aa, 0x009a},
-  {0xd0ab, 0x009b},
-  {0xd0ac, 0x009c},
-  {0xd0ad, 0x009d},
-  {0xd0ae, 0x009e},
-  {0xd0af, 0x009f},
-  {0xd0b0, 0x00a0},
-  {0xd0b1, 0x00a1},
-  {0xd0b2, 0x00a2},
-  {0xd0b3, 0x00a3},
-  {0xd0b4, 0x00a4},
-  {0xd0b5, 0x00a5},
-  {0xd0b6, 0x00a6},
-  {0xd0b7, 0x00a7},
-  {0xd0b8, 0x00a8},
-  {0xd0b9, 0x00a9},
-  {0xd0ba, 0x00aa},
-  {0xd0bb, 0x00ab},
-  {0xd0bc, 0x00ac},
-  {0xd0bd, 0x00ad},
-  {0xd0be, 0x00ae},
-  {0xd0bf, 0x00af},
-  {0xd180, 0x00e0},
-  {0xd181, 0x00e1},
-  {0xd182, 0x00e2},
-  {0xd183, 0x00e3},
-  {0xd184, 0x00e4},
-  {0xd185, 0x00e5},
-  {0xd186, 0x00e6},
-  {0xd187, 0x00e7},
-  {0xd188, 0x00e8},
-  {0xd189, 0x00e9},
-  {0xd18a, 0x00ea},
-  {0xd18b, 0x00eb},
-  {0xd18c, 0x00ec},
-  {0xd18d, 0x00ed},
-  {0xd18e, 0x00ee},
-  {0xd18f, 0x00ef},
-  {0xd191, 0x00f1},
-  {0xd194, 0x00f3},
-  {0xd197, 0x00f5},
-  {0xd19e, 0x00f7},
-  {0xe28496, 0x00fc},
-  {0xe28899, 0x00f9},
-  {0xe2889a, 0x00fb},
-  {0xe29480, 0x00c4},
-  {0xe29482, 0x00b3},
-  {0xe2948c, 0x00da},
-  {0xe29490, 0x00bf},
-  {0xe29494, 0x00c0},
-  {0xe29498, 0x00d9},
-  {0xe2949c, 0x00c3},
-  {0xe294a4, 0x00b4},
-  {0xe294ac, 0x00c2},
-  {0xe294b4, 0x00c1},
-  {0xe294bc, 0x00c5},
-  {0xe29590, 0x00cd},
-  {0xe29591, 0x00ba},
-  {0xe29592, 0x00d5},
-  {0xe29593, 0x00d6},
-  {0xe29594, 0x00c9},
-  {0xe29595, 0x00b8},
-  {0xe29596, 0x00b7},
-  {0xe29597, 0x00bb},
-  {0xe29598, 0x00d4},
-  {0xe29599, 0x00d3},
-  {0xe2959a, 0x00c8},
-  {0xe2959b, 0x00be},
-  {0xe2959c, 0x00bd},
-  {0xe2959d, 0x00bc},
-  {0xe2959e, 0x00c6},
-  {0xe2959f, 0x00c7},
-  {0xe295a0, 0x00cc},
-  {0xe295a1, 0x00b5},
-  {0xe295a2, 0x00b6},
-  {0xe295a3, 0x00b9},
-  {0xe295a4, 0x00d1},
-  {0xe295a5, 0x00d2},
-  {0xe295a6, 0x00cb},
-  {0xe295a7, 0x00cf},
-  {0xe295a8, 0x00d0},
-  {0xe295a9, 0x00ca},
-  {0xe295aa, 0x00d8},
-  {0xe295ab, 0x00d7},
-  {0xe295ac, 0x00ce},
-  {0xe29680, 0x00df},
-  {0xe29684, 0x00dc},
-  {0xe29688, 0x00db},
-  {0xe2968c, 0x00dd},
-  {0xe29690, 0x00de},
-  {0xe29691, 0x00b0},
-  {0xe29692, 0x00b1},
-  {0xe29693, 0x00b2},
-  {0xe296a0, 0x00fe}
-};