removed lz4c target

should no longer be necessary

build/cmake/CMakeLists.txt

@@ -32,7 +32,6 @@ project(LZ4 VERSION ${LZ4_VERSION_STRING} LANGUAGES C)
 
 
 option(LZ4_BUILD_CLI "Build lz4 program" ON)
-option(LZ4_BUILD_LEGACY_LZ4C "Build lz4c program with legacy argument support" ON)
 
 
 # Determine if LZ4 is being built as part of another project.
@@ -145,13 +144,6 @@ if (LZ4_BUILD_CLI)
   set_target_properties(lz4cli PROPERTIES OUTPUT_NAME lz4)
 endif()
 
-# lz4c
-if (LZ4_BUILD_LEGACY_LZ4C)
-  list(APPEND LZ4_PROGRAMS_BUILT lz4c)
-  add_executable(lz4c ${LZ4_CLI_SOURCES})
-  set_target_properties(lz4c PROPERTIES COMPILE_DEFINITIONS "ENABLE_LZ4C_LEGACY_OPTIONS")
-endif()
-
 # Extra warning flags
 if(MSVC)
   set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /W4")