taito/taitopjc.cpp: convert optiger to actually use AD_STICK instead of fake Lightgun inputs

[angelosa]

Operation Tiger has this note in the input def:

mame/src/mame/taito/taitopjc.cpp

Line 792 in 1fe8eb3

// Actually cabinet mounted guns (basically analog sticks), but lightgun inputs are more practical in MAME.

Note doesn't acknowledge the almost same mounted gun type input (that actually works too) in the Operation Thunderbolt prequel:

mame/src/mame/taito/othunder.cpp

Lines 507 to 518 in 1fe8eb3

	PORT_START("P1X")
	PORT_BIT( 0xff, 0x80, IPT_AD_STICK_X ) PORT_CROSSHAIR(X, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(13) PORT_REVERSE PORT_PLAYER(1)
	PORT_START("P1Y")
	PORT_BIT( 0xff, 0x80, IPT_AD_STICK_Y ) PORT_CROSSHAIR(Y, 1.0, -0.057, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(13) PORT_PLAYER(1)
	PORT_START("P2X")
	PORT_BIT( 0xff, 0x80, IPT_AD_STICK_X ) PORT_CROSSHAIR(X, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(13) PORT_REVERSE PORT_PLAYER(2)
	PORT_START("P2Y")
	PORT_BIT( 0xff, 0x80, IPT_AD_STICK_Y ) PORT_CROSSHAIR(Y, 1.0, -0.057, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(13) PORT_PLAYER(2)