Deactivate old fix for Tyrian 2000 setup

src/hardware/input/intel8042.cpp

@@ -735,7 +735,7 @@ static void execute_command(const Command command)
 		buffer_add(0);
 		break;
 	case Command::ReadFwRevision: // 0xa1
-		// Reads the keybaord copntroller firmware
+		// Reads the keyboard controller firmware
 		// revision, always one byte
 		flush_buffer();
 		buffer_add(FirmwareRevision);
@@ -830,7 +830,7 @@ static void execute_command(const Command command)
 		buffer_add(get_input_port());
 		break;
 	case Command::ReadControllerMode: // 0xca
-		// Reads keybaord controller mode
+		// Reads keyboard controller mode
 		// 0x00: ISA (AT)
 		// 0x01: PS/2 (MCA)
 		flush_buffer();
@@ -910,10 +910,6 @@ static void execute_command(const Command command, const uint8_t param)
 		// firmware allow everything? writing bits 4,5 and 6
 		// should be safe in real implementation, how about here?
 		sanitize_config_byte();
-		// Make sure only the needed IRQs are activated
-		PIC_DeActivateIRQ(get_irq_mouse());
-		PIC_DeActivateIRQ(get_irq_keyboard());
-		activate_irqs_if_needed();
 		break;
 	case Command::WriteControllerMode: // 0xcb
 		// Changes controller mode to PS/2 or AT
@@ -997,7 +993,6 @@ static uint8_t read_data_port(io_port_t, io_width_t) // port 0x60
 	}
 
 	if (is_data_from_aux) {
-		PIC_DeActivateIRQ(get_irq_mouse());
 		assert(waiting_bytes_from_aux);
 		--waiting_bytes_from_aux;
 		if (I8042_IsReadyForAuxFrame()) {
@@ -1006,7 +1001,6 @@ static uint8_t read_data_port(io_port_t, io_width_t) // port 0x60
 	}
 
 	if (is_data_from_kbd) {
-		PIC_DeActivateIRQ(get_irq_keyboard());
 		assert(waiting_bytes_from_kbd);
 		--waiting_bytes_from_kbd;
 		if (I8042_IsReadyForKbdFrame()) {