Remove unused FXFORMAT_HEX and FXFORMAT_CAPITAL.

Change-Id: I13140ea4242db4b0860f8fdd164f50d1745c0794
Reviewed-on: https://pdfium-review.googlesource.com/12790
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
diff --git a/core/fxcrt/cfx_bytestring.cpp b/core/fxcrt/cfx_bytestring.cpp
index efe49f8..a8b65b5 100644
--- a/core/fxcrt/cfx_bytestring.cpp
+++ b/core/fxcrt/cfx_bytestring.cpp
@@ -40,12 +40,6 @@
   }
   int base = 10;
   const char* str = "0123456789abcdef";
-  if (flags & FXFORMAT_HEX) {
-    base = 16;
-    if (flags & FXFORMAT_CAPITAL) {
-      str = "0123456789ABCDEF";
-    }
-  }
   while (u != 0) {
     buf1[buf_pos--] = str[u % base];
     u = u / base;
diff --git a/core/fxcrt/cfx_bytestring.h b/core/fxcrt/cfx_bytestring.h
index 390a4b3..ff43dab 100644
--- a/core/fxcrt/cfx_bytestring.h
+++ b/core/fxcrt/cfx_bytestring.h
@@ -172,8 +172,6 @@
   uint32_t GetID() const { return AsStringC().GetID(); }
 
 #define FXFORMAT_SIGNED 1
-#define FXFORMAT_HEX 2
-#define FXFORMAT_CAPITAL 4
 
   static CFX_ByteString FormatInteger(int i, uint32_t flags = 0);
   static CFX_ByteString FormatFloat(float f, int precision = 0);