diff --git a/unzip-6.0-crc-builtin.patch b/unzip-6.0-crc-builtin.patch
deleted file mode 100644
index c44c6ce..0000000
--- a/unzip-6.0-crc-builtin.patch
+++ /dev/null
@@ -1,122 +0,0 @@
-diff -Nabur unzip60/crc32.c unzip604/crc32.c
---- unzip60/crc32.c	2007-01-22 13:34:38.000000000 +0800
-+++ unzip604/crc32.c	2021-05-11 19:27:06.273953956 +0800
-@@ -675,7 +675,32 @@
- 
- #endif /* (IZ_CRC_BE_OPTIMIZ || IZ_CRC_LE_OPTIMIZ) */
- 
-+#ifdef ARCH_AARCH64
-+u_int32_t crc32(u_int32_t crc,const u_int8_t *p, unsigned int len)
-+{
-+int64_t length = len;
-+
-+while ((length -= sizeof(u_int64_t)) >=0) {
-+        __builtin_aarch64_crc32cx(crc, *((u_int64_t *)p));
-+        p += sizeof(u_int64_t);
-+}
- 
-+if (length & sizeof(u_int32_t)) {
-+        __builtin_aarch64_crc32cw(crc, *((u_int32_t *)p));
-+        p += sizeof(u_int32_t);
-+}
-+
-+if (length & sizeof(u_int16_t)) {
-+        __builtin_aarch64_crc32ch(crc, *((u_int16_t *)p));
-+        p += sizeof(u_int16_t);
-+}
-+
-+if (length & sizeof(u_int8_t))
-+        __builtin_aarch64_crc32cb(crc, *p);
-+
-+return crc;
-+}
-+#else
- /* ========================================================================= */
- ulg crc32(crc, buf, len)
-     ulg crc;                    /* crc shift register */
-@@ -726,6 +751,9 @@
- 
-   return REV_BE(c) ^ 0xffffffffL;   /* (instead of ~c for 64-bit machines) */
- }
-+
-+#endif /* !ARCH_AARCH64*/
-+
- #endif /* !ASM_CRC */
- #endif /* !CRC_TABLE_ONLY */
- #endif /* !USE_ZLIB */
-diff -Nabur unzip60/crc32.h unzip604/crc32.h
---- unzip60/crc32.h	2008-03-09 02:40:20.000000000 +0800
-+++ unzip604/crc32.h	2021-05-11 19:24:42.379717503 +0800
-@@ -36,7 +36,11 @@
- #    undef IZ_CRC_BE_OPTIMIZ
- #  endif
- #else /* !(USE_ZLIB || CRC_TABLE_ONLY) */
-+#  ifdef ARCH_AARCH64
-+  u_int32_t crc32(u_int32_t crc,const u_int8_t *p, unsigned int len);
-+#  else
-    ulg      crc32           OF((ulg crc, ZCONST uch *buf, extent len));
-+#  endif 
- #endif /* ?(USE_ZLIB || CRC_TABLE_ONLY) */
- 
- #ifndef CRC_32_TAB
-diff -Nabur unzip60/unix/Makefile unzip604/unix/Makefile
---- unzip60/unix/Makefile	2009-01-19 06:41:18.000000000 +0800
-+++ unzip604/unix/Makefile	2021-05-11 19:32:00.946534741 +0800
-@@ -40,7 +40,8 @@
- 
- # Defaults most systems use (use LOCAL_UNZIP in environment to add flags,
- # such as -DDOSWILD).
--
-+TARGET_ARCH = $(shell uname -m)
-+ARCH = $(shell getconf LONG_BIT)
- # UnZip flags
- CC = cc#	try using "gcc" target rather than changing this (CC and LD
- LD = $(CC)#	must match, else "unresolved symbol:  ___main" is possible)
-@@ -54,6 +55,12 @@
- LF = -o unzip$E $(LFLAGS1)
- LF2 = -s
- 
-+ifeq ($(TARGET_ARCH),aarch64)
-+CFF = -DARCH=$(ARCH) -march=armv8.1-a -D ARCH_AARCH64
-+else
-+CFF =
-+endif
-+
- # UnZipSFX flags
- SL = -o unzipsfx$E $(LFLAGS1)
- SL2 = $(LF2)
-@@ -77,6 +84,8 @@
- SHELL = /bin/sh
- MAKEF = -f unix/Makefile
- 
-+
-+
- # Version info for unix/unix.c
- HOST_VERSINFO=-DIZ_CC_NAME='\"\$$(CC) \"' -DIZ_OS_NAME='\"`uname -a`\"'
- 
-@@ -231,13 +240,13 @@
- # yes, we should be able to use the $O macro to combine these two, but it
- # fails on some brain-damaged makes (e.g., AIX's)...no big deal
- .c.o:
--	$(CC) -c $(CF) $*.c
-+	$(CC) -c $(CF) $(CFF)  $*.c
- 
- .c.obj:
--	$(CC) -c $(CF) $*.c
-+	$(CC) -c $(CF) $(CFF)  $*.c
- 
- .c.pic.o:
--	$(CC) -c $(CF) -o $@ $*.c
-+	$(CC) -c $(CF) $(CFF)  -o $@ $*.c
- 
- # this doesn't work...directories are always a pain with implicit rules
- #.1.txt:		man/$<
-@@ -329,7 +338,7 @@
- 	$(CC) -c $(CF) -DSFX -o $@ unzip.c
- 
- crc32_$O:	crc32.c $(UNZIP_H) zip.h crc32.h
--	$(CC) -c $(CF) -DSFX -o $@ crc32.c
-+	$(CC) -c $(CF) -DSFX -DARCH=$(ARCH) -march=armv8.1-a  -o $@ crc32.c
- 
- crypt_$O:	crypt.c $(UNZIP_H) zip.h crypt.h crc32.h ttyio.h
- 	$(CC) -c $(CF) -DSFX -o $@ crypt.c