removed generated elf and object files from the repository

elf_examples/asm64_copy

elf_examples/asm_copy

elf_examples/asm_copy.readelf

elf_examples/elf_dummy_header_i386_32.elf

elf_examples/elf_dummy_header_i386_64.elf

elf_examples/elf_dummy_header_ppc_32.elf

elf_examples/elf_dummy_header_ppc_64.elf

elf_examples/hello_32_copy

elf_examples/hello_32_copy.o

elf_examples/hello_64_copy

elf_examples/hello_64_copy.o

elf_examples/ls_copy

elf_examples/ls_copy.readelf

elf_examples/read_write_arm_elf32_input_copy

elf_examples/read_write_arm_elf32_output

elf_examples/test_ppc_copy

elf_examples/test_ppc_copy.o

elf_examples/write_exe_i386_32

elf_examples/write_obj_i386_32.o

elf_examples/write_obj_i386_32_copy.o