remote.h: retire CAS_OPT_NAME
When the "--force-with-lease" option was introduced in 28f5d176 (remote.c: add command line option parser for "--force-with-lease", 2013-07-08), the design discussion revolved around the concept of "compare-and-swap", and it can still be seen in the name used for variables and helper functions. The end-user facing option name ended up to be a bit different, so during the development iteration of the feature, we used this C preprocessor macro to make it easier to rename it later. All of that happened more than 10 years ago, and the flexibility afforded by the CAS_OPT_NAME macro outlived its usefulness. Inline the constant string for the option name, like all other option names in the code. Signed-off-by: Junio C Hamano <gitster@pobox.com>