HaikuDepot: Fix usage of std::remove.

That's right kids, std::remove doesn't (and can't) actually remove
things from containers! Instead you have to pass its results into
container::erase in order to do anything at all.

Fixes #17579, and in my testing at least, the strange crashes
and heap corruptions.

src/apps/haikudepot/edits_generic/EditManager.cpp

@@ -174,9 +174,7 @@ EditManager::AddListener(Listener* listener)
 void
 EditManager::RemoveListener(Listener* listener)
 {
-	fListeners.erase(std::remove(
-		fListeners.begin(),
-		fListeners.end(),
+	fListeners.erase(std::remove(fListeners.begin(), fListeners.end(),
 		listener), fListeners.end());
 }
 

src/apps/haikudepot/model/PackageInfo.cpp

@@ -1041,7 +1041,8 @@ PackageInfo::AddListener(const PackageInfoListenerRef& listener)
 void
 PackageInfo::RemoveListener(const PackageInfoListenerRef& listener)
 {
-	std::remove(fListeners.begin(), fListeners.end(), listener);
+	fListeners.erase(std::remove(fListeners.begin(), fListeners.end(),
+		listener), fListeners.end());
 }
 
 

src/apps/haikudepot/textview/TextDocument.cpp

@@ -141,9 +141,9 @@ TextDocument::Replace(int32 textOffset, int32 length, TextDocumentRef document)
 {
 	int32 firstParagraph = 0;
 	int32 paragraphCount = 0;
-	
+
 	// TODO: Call _NotifyTextChanging() before any change happened
-	
+
 	status_t ret = _Remove(textOffset, length, firstParagraph, paragraphCount);
 	if (ret != B_OK)
 		return ret;
@@ -443,7 +443,8 @@ TextDocument::AddListener(TextListenerRef listener)
 bool
 TextDocument::RemoveListener(TextListenerRef listener)
 {
-	std::remove(fTextListeners.begin(), fTextListeners.end(), listener);
+	fTextListeners.erase(std::remove(fTextListeners.begin(), fTextListeners.end(),
+		listener), fTextListeners.end());
 	return true;
 }