Rename "Program return data: " to "Program return: " since "data" is
redundant.
(cherry picked from commit b89177c8de
)
Conflicts:
programs/bpf_loader/src/syscalls.rs
sdk/bpf/c/inc/sol/log.h
sdk/program/Cargo.toml
sdk/src/feature_set.rs
sdk/src/process_instruction.rs