deskutils/remind: fix build on riscv64 (+)

The LTO build fails on riscv64 due to a phony linker error
about ABI incompatibility. Disable LTO on riscv64 to make
the build succeed.

PR: 267021
MFH: 2022Q4
(cherry picked from commit f3d5006d3dc86ff052a735666f0d15da6fb8858a)