MSVC: removed wrong dll exports in plugins

plugins/channelrx/demoddatv/datvdemodgui.cpp

@@ -634,8 +634,10 @@ void DATVDemodGUI::on_softLDPC_clicked()
 
 void DATVDemodGUI::on_maxBitflips_valueChanged(int value)
 {
+#ifdef LINUX
     m_settings.m_maxBitflips = value;
     applySettings();
+#endif
 }
 
 void DATVDemodGUI::on_chkViterbi_clicked()

plugins/channelrx/demoddatv/datvdvbs2ldpcdialog.h

@@ -20,13 +20,12 @@
 #define SDRGUI_GUI_DATVDVBS2LDPCDIALOG_H_
 
 #include <QDialog>
-#include "export.h"
 
 namespace Ui {
     class DatvDvbS2LdpcDialog;
 }
 
-class SDRGUI_API DatvDvbS2LdpcDialog : public QDialog {
+class DatvDvbS2LdpcDialog : public QDialog {
     Q_OBJECT
 public:
     explicit DatvDvbS2LdpcDialog(QWidget* parent = nullptr);

plugins/samplesource/sigmffileinput/recordinfodialog.h

@@ -3,13 +3,11 @@
 
 #include <QDialog>
 
-#include "export.h"
-
 namespace Ui {
 	class RecordInfoDialog;
 }
 
-class SDRGUI_API RecordInfoDialog : public QDialog {
+class RecordInfoDialog : public QDialog {
 	Q_OBJECT
 
 public: