MIPS: Remove unused arch/mips/crypto directory

The last MIPS crypto code was moved to lib/crypto/mips in
commit c9e5ac0ab9 ("lib/crypto: mips/md5: Migrate optimized code into
library"). However, arch/mips/crypto still contains stub Kconfig,
Makefile, and .gitignore files. Remove these unnecessary files.

Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

arch/mips/Makefile

@@ -350,8 +350,6 @@ OBJCOPYFLAGS		+= --remove-section=.reginfo
 libs-y			+= arch/mips/lib/
 libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
 
-drivers-y			+= arch/mips/crypto/
-
 # suspend and hibernation support
 drivers-$(CONFIG_PM)	+= arch/mips/power/
 

arch/mips/crypto/.gitignore

@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-poly1305-core.S

arch/mips/crypto/Kconfig

@@ -1,5 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-menu "Accelerated Cryptographic Algorithms for CPU (mips)"
-
-endmenu

arch/mips/crypto/Makefile

@@ -1,5 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for MIPS crypto files..
-#
-

crypto/Kconfig

@@ -1366,9 +1366,6 @@ endif
 if ARM64
 source "arch/arm64/crypto/Kconfig"
 endif
-if MIPS
-source "arch/mips/crypto/Kconfig"
-endif
 if PPC
 source "arch/powerpc/crypto/Kconfig"
 endif