Send CONFIG_VTAG_ICACHE back into it's cold grave.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/Kconfig

@@ -1354,10 +1354,6 @@ config MIPS_VPE_APSP_API
       bool "Enable support for AP/SP API (RTLX)"
       depends on MIPS_VPE_LOADER
 
-config VTAG_ICACHE
-	bool "Support for Virtual Tagged I-cache" if CPU_MIPS64 || CPU_MIPS32
-	default y if CPU_SB1
-
 config SB1_PASS_1_WORKAROUNDS
 	bool
 	depends on CPU_SB1_PASS_1