Remove unused no-arg constructor for Cline.

Change-Id: Idf6af35daa0779e282c1d091dfa06b87e83bf5c7
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/64973
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>

core/fpdfdoc/cline.cpp

diff --git a/core/fpdfdoc/cline.cpp b/core/fpdfdoc/cline.cpp
index a24b819..7940dc8 100644
--- a/core/fpdfdoc/cline.cpp
+++ b/core/fpdfdoc/cline.cpp
@@ -6,11 +6,9 @@
 
 #include "core/fpdfdoc/cline.h"
 
-CLine::CLine() {}
-
 CLine::CLine(const CPVT_LineInfo& lineinfo) : m_LineInfo(lineinfo) {}
 
-CLine::~CLine() {}
+CLine::~CLine() = default;
 
 CPVT_WordPlace CLine::GetBeginWordPlace() const {
   return CPVT_WordPlace(LinePlace.nSecIndex, LinePlace.nLineIndex, -1);

core/fpdfdoc/cline.h

diff --git a/core/fpdfdoc/cline.h b/core/fpdfdoc/cline.h
index 67bf06b..b7e32d4 100644
--- a/core/fpdfdoc/cline.h
+++ b/core/fpdfdoc/cline.h
@@ -12,7 +12,6 @@
 
 class CLine {
  public:
-  CLine();
   explicit CLine(const CPVT_LineInfo& lineinfo);
   ~CLine();