try fix cmake

vendor/hash/CMakeLists.txt

@@ -5,8 +5,6 @@ if (COMMAND llama_add_compile_flags)
 endif()
 
 set(VENDOR_SRCS
-    xxhash/xxhash.c
-    sha1/sha1.c
     sha256/sha256.c
 )
 
@@ -27,8 +25,5 @@ else()
 endif()
 set_source_files_properties(${VENDOR_SRCS} PROPERTIES COMPILE_OPTIONS ${NO_WARN_FLAG})
 
-# sha1 lives in a namespace to avoid a clash with boringssl, see scripts/sync_vendor.py
-set_source_files_properties(sha1/sha1.c PROPERTIES LANGUAGE CXX)
-
 # sha256.c includes "rotate-bits/rotate-bits.h", so consumers get this dir too
 target_include_directories(${TARGET} PUBLIC .)