Remove unused CXFA_GEColor no-arg ctor.

Change-Id: Id051aac4c57e75cc279451d8c9f1f9bef9c601d7
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/65156
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>
diff --git a/xfa/fxgraphics/cxfa_gecolor.cpp b/xfa/fxgraphics/cxfa_gecolor.cpp
index 93d7565..32dec96 100644
--- a/xfa/fxgraphics/cxfa_gecolor.cpp
+++ b/xfa/fxgraphics/cxfa_gecolor.cpp
@@ -6,8 +6,6 @@
 
 #include "xfa/fxgraphics/cxfa_gecolor.h"
 
-CXFA_GEColor::CXFA_GEColor() = default;
-
 CXFA_GEColor::CXFA_GEColor(const FX_ARGB argb) : m_type(Solid), m_argb(argb) {}
 
 CXFA_GEColor::CXFA_GEColor(CXFA_GEPattern* pattern, const FX_ARGB argb)
diff --git a/xfa/fxgraphics/cxfa_gecolor.h b/xfa/fxgraphics/cxfa_gecolor.h
index 2b2d2d4..9cf40aa 100644
--- a/xfa/fxgraphics/cxfa_gecolor.h
+++ b/xfa/fxgraphics/cxfa_gecolor.h
@@ -17,7 +17,6 @@
  public:
   enum Type { Invalid, Solid, Pattern, Shading };
 
-  CXFA_GEColor();
   explicit CXFA_GEColor(const FX_ARGB argb);
   explicit CXFA_GEColor(CXFA_GEShading* shading);
   CXFA_GEColor(CXFA_GEPattern* pattern, const FX_ARGB argb);