stagefright: Remove deprecated Exynos platform variant logic

ifeq ($(BOARD_USE_S3D_SUPPORT), true)

ifeq ($(BOARD_USES_HWC_SERVICES), true)

ifeq ($(TARGET_SLSI_VARIANT),cm)

SLSI_DIR := samsung_slsi-cm

PLATFORM_DIR := $(TARGET_BOARD_PLATFORM)

else

SLSI_DIR := samsung_slsi

PLATFORM_DIR := $(TARGET_BOARD_PLATFORM)-$(TARGET_SLSI_VARIANT)

endif

LOCAL_CFLAGS += -DUSE_S3D_SUPPORT -DHWC_SERVICES

LOCAL_C_INCLUDES += \

        $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ/usr/include \

        $(TOP)/hardware/$(SLSI_DIR)/openmax/include/exynos \

        $(TOP)/hardware/$(SLSI_DIR)/$(PLATFORM_DIR)/libhwcService \

        $(TOP)/hardware/$(SLSI_DIR)/$(PLATFORM_DIR)/libhwc \

        $(TOP)/hardware/$(SLSI_DIR)/$(PLATFORM_DIR)/include \

        $(TOP)/hardware/$(SLSI_DIR)/$(TARGET_SOC)/libhwcmodule \

        $(TOP)/hardware/$(SLSI_DIR)/$(TARGET_SOC)/include \

        $(TOP)/hardware/$(SLSI_DIR)/exynos/libexynosutils \

        $(TOP)/hardware/$(SLSI_DIR)/exynos/include \

        $(TOP)/hardware/$(SLSI_DIR)/exynos/libhwc

        $(TOP)/hardware/samsung_slsi-$(TARGET_SLSI_VARIANT)/openmax/include/exynos \

        $(TOP)/hardware/samsung_slsi-$(TARGET_SLSI_VARIANT)/$(TARGET_BOARD_PLATFORM)/libhwcService \

        $(TOP)/hardware/samsung_slsi-$(TARGET_SLSI_VARIANT)/$(TARGET_BOARD_PLATFORM)/libhwc \

        $(TOP)/hardware/samsung_slsi-$(TARGET_SLSI_VARIANT)/$(TARGET_BOARD_PLATFORM)/include \

        $(TOP)/hardware/samsung_slsi-$(TARGET_SLSI_VARIANT)/$(TARGET_SOC)/libhwcmodule \

        $(TOP)/hardware/samsung_slsi-$(TARGET_SLSI_VARIANT)/$(TARGET_SOC)/include \

        $(TOP)/hardware/samsung_slsi-$(TARGET_SLSI_VARIANT)/exynos/libexynosutils \

        $(TOP)/hardware/samsung_slsi-$(TARGET_SLSI_VARIANT)/exynos/include \

        $(TOP)/hardware/samsung_slsi-$(TARGET_SLSI_VARIANT)/exynos/libhwc

LOCAL_ADDITIONAL_DEPENDENCIES := \

        $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ/usr