genesys: Remove unused command set API

backend/genesys_gl124.cc

@@ -3635,8 +3635,7 @@ static Genesys_Command_Set gl124_cmd_set = {
   NULL,
   gl124_send_shading_data,
   gl124_calculate_current_setup,
-  gl124_boot,
-  gl124_init_scan_regs
+  gl124_boot
 };
 
 SANE_Status

backend/genesys_gl646.cc

@@ -5042,7 +5042,6 @@ static Genesys_Command_Set gl646_cmd_set = {
   gl646_move_to_ta,
   NULL,
   NULL,
-  NULL,
   NULL
 };
 

backend/genesys_gl841.cc

@@ -5669,7 +5669,6 @@ static Genesys_Command_Set gl841_cmd_set = {
   NULL,
   gl841_send_shading_data,
   gl841_calculate_current_setup,
-  NULL,
   NULL
 };
 

backend/genesys_gl843.cc

@@ -4466,8 +4466,7 @@ static Genesys_Command_Set gl843_cmd_set = {
   gl843_move_to_ta,
   gl843_send_shading_data,
   gl843_calculate_current_setup,
-  gl843_boot,
-  NULL
+  gl843_boot
 };
 
 SANE_Status

backend/genesys_gl846.cc

@@ -3365,8 +3365,7 @@ static Genesys_Command_Set gl846_cmd_set = {
   NULL,
   gl846_send_shading_data,
   gl846_calculate_current_setup,
-  gl846_boot,
-  NULL
+  gl846_boot
 };
 
 SANE_Status

backend/genesys_gl847.cc

@@ -3484,8 +3484,7 @@ static Genesys_Command_Set gl847_cmd_set = {
   NULL,
   gl847_send_shading_data,
   gl847_calculate_current_setup,
-  gl847_boot,
-  NULL
+  gl847_boot
 };
 
 SANE_Status

backend/genesys_low.h

@@ -1058,25 +1058,6 @@ typedef struct Genesys_Command_Set
      */
     SANE_Status (*asic_boot) (Genesys_Device * dev, SANE_Bool cold);
 
-    /**
-     * Scan register setting interface
-     */
-    SANE_Status (*init_scan_regs) (Genesys_Device * dev,
-                                   const Genesys_Sensor& sensor,
-				   Genesys_Register_Set * reg,
-				   float xres,
-				   float yres,
-				   float startx,
-				   float starty,
-				   float pixels,
-				   float lines,
-				   unsigned int depth,
-				   unsigned int channels,
-                                   ScanMethod scan_method,
-                                   ScanColorMode scan_mode,
-				   int color_filter,
-				   unsigned int flags);
-
 } Genesys_Command_Set;
 
 /** @brief structure to describe a scanner model