[LyX/master] Remove method that is now unneeded.

[Richard Kimberly Heck]

commit 7d36b9e4fa89e804ca7cf07daf81eec817e6b21d
Author: Richard Kimberly Heck <rikiheck at lyx.org>
Date:   Sat Apr 25 22:27:09 2020 -0400

    Remove method that is now unneeded.
---
 src/Buffer.cpp              |    6 +++---
 src/insets/InsetInclude.cpp |   10 ++--------
 src/insets/InsetInclude.h   |    7 +++----
 3 files changed, 8 insertions(+), 15 deletions(-)

diff --git a/src/Buffer.cpp b/src/Buffer.cpp
index 8b5fae1..0cc1d23 100644
--- a/src/Buffer.cpp
+++ b/src/Buffer.cpp
@@ -3017,7 +3017,7 @@ void Buffer::dispatch(FuncRequest const & func, DispatchResult & dr)
 				// get buffer of external file
 				InsetInclude const & ins =
 					static_cast<InsetInclude const &>(*it);
-				Buffer * child = ins.getChildBuffer();
+				Buffer * child = ins.loadIfNeeded();
 				if (!child)
 					continue;
 				child->dispatch(func, dr);
@@ -3805,7 +3805,7 @@ void Buffer::Impl::updateMacros(DocIterator & it, DocIterator & scope)
 				InsetInclude const & incinset =
 					static_cast<InsetInclude const &>(*insit.inset);
 				macro_lock = true;
-				Buffer * child = incinset.getChildBuffer();
+				Buffer * child = incinset.loadIfNeeded();
 				macro_lock = false;
 				if (!child)
 					continue;
@@ -3900,7 +3900,7 @@ void Buffer::getUsedBranches(std::list<docstring> & result, bool const from_mast
 			// get buffer of external file
 			InsetInclude const & ins =
 				static_cast<InsetInclude const &>(*it);
-			Buffer * child = ins.getChildBuffer();
+			Buffer * child = ins.loadIfNeeded();
 			if (!child)
 				continue;
 			child->getUsedBranches(result, true);
diff --git a/src/insets/InsetInclude.cpp b/src/insets/InsetInclude.cpp
index be823a7..6dca350 100644
--- a/src/insets/InsetInclude.cpp
+++ b/src/insets/InsetInclude.cpp
@@ -446,12 +446,6 @@ docstring InsetInclude::screenLabel() const
 }
 
 
-Buffer * InsetInclude::getChildBuffer() const
-{
-	return loadIfNeeded();
-}
-
-
 Buffer * InsetInclude::loadIfNeeded() const
 {
 	// This is for background export and preview. We don't even want to
@@ -1330,7 +1324,7 @@ void InsetInclude::addToToc(DocIterator const & cpit, bool output_active,
 		b.pushItem(cpit, screenLabel(), output_active);
 		b.pop();
 	} else {
-		Buffer const * const childbuffer = getChildBuffer();
+		Buffer const * const childbuffer = loadIfNeeded();
 
 		TocBuilder & b = backend.builder("child");
 		docstring str = childbuffer ? childbuffer->fileName().displayName()
@@ -1386,7 +1380,7 @@ void InsetInclude::updateCommand()
 void InsetInclude::updateBuffer(ParIterator const & it, UpdateType utype, bool const deleted)
 {
 	file_exist_ = includedFileExist();
-	Buffer const * const childbuffer = getChildBuffer();
+	Buffer const * const childbuffer = loadIfNeeded();
 	if (childbuffer) {
 		if (!checkForRecursiveInclude(childbuffer))
 			childbuffer->updateBuffer(Buffer::UpdateChildOnly, utype);
diff --git a/src/insets/InsetInclude.h b/src/insets/InsetInclude.h
index 6636583..66487bc 100644
--- a/src/insets/InsetInclude.h
+++ b/src/insets/InsetInclude.h
@@ -48,8 +48,9 @@ public:
 
 	///
 	void setChildBuffer(Buffer * buffer);
-	/// \return the child buffer if the file is a LyX doc and could be loaded
-	Buffer * getChildBuffer() const;
+
+	/// \return loaded Buffer or zero if the file loading did not proceed.
+	Buffer * loadIfNeeded() const;
 
 	/** Update the cache with all bibfiles in use of the child buffer
 	 *  (including bibfiles of grandchild documents).
@@ -131,8 +132,6 @@ private:
 	 *  and the preview should be regenerated.
 	 */
 	void fileChanged() const;
-	/// \return loaded Buffer or zero if the file loading did not proceed.
-	Buffer * loadIfNeeded() const;
 	/// launch external application
 	void editIncluded(std::string const & file);
 	///