arm: ti: Remove omap4 platform support

There are no longer any OMAP4 platforms in U-Boot, remove the related
functionality.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 8465b54..c07dd68 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -29,29 +29,6 @@
 	imply SYS_THUMB_BUILD
 	imply TWL4030_POWER
 
-config OMAP44XX
-	bool "OMAP44XX SoC"
-	select DM_EVENT
-	select SPL_USE_TINY_PRINTF
-	select SPL_SYS_NO_VECTOR_TABLE if SPL
-	imply NAND_OMAP_ELM
-	imply NAND_OMAP_GPMC
-	imply SPL_DISPLAY_PRINT
-	imply SPL_FS_EXT4
-	imply SPL_FS_FAT
-	imply SPL_GPIO
-	imply SPL_I2C
-	imply SPL_LIBCOMMON_SUPPORT
-	imply SPL_LIBDISK_SUPPORT
-	imply SPL_LIBGENERIC_SUPPORT
-	imply SPL_MMC
-	imply SPL_NAND_SIMPLE
-	imply SPL_NAND_SUPPORT
-	imply SPL_POWER
-	imply SPL_SERIAL
-	imply SYS_I2C_OMAP24XX
-	imply SYS_THUMB_BUILD
-
 config OMAP54XX
 	bool "OMAP54XX SoC"
 	select ARM_CORTEX_A15_CVE_2017_5715
@@ -162,7 +139,7 @@
 	bool
 
 choice
-	depends on OMAP44XX || OMAP54XX
+	depends on OMAP54XX
 	prompt "Static or dynamic DDR timing calculations"
 	default SYS_EMIF_PRECALCULATED_TIMING_REGS
 	help
@@ -181,8 +158,6 @@
 
 source "arch/arm/mach-omap2/omap3/Kconfig"
 
-source "arch/arm/mach-omap2/omap4/Kconfig"
-
 source "arch/arm/mach-omap2/omap5/Kconfig"
 
 source "arch/arm/mach-omap2/am33xx/Kconfig"