Makefile: drop -DSUPPRESS_ANNOTATED_LEAKS

The -DSUPPRESS_ANNOTATED_LEAKS preprocessor directive was used to enable
our `UNLEAK()` macro in the past, which marks memory as still-reachable
so that the leak sanitizer does not complain. Starting with 52c7dbd
(git-compat-util: drop now-unused `UNLEAK()` macro, 2024-11-20) this
macro has been removed, and thus the preprocessor directive is not
required anymore, either.

Drop it.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: pks-t

Makefile

@@ -1490,7 +1490,6 @@ ifneq ($(filter undefined,$(SANITIZERS)),)
 BASIC_CFLAGS += -DSHA1DC_FORCE_ALIGNED_ACCESS
 endif
 ifneq ($(filter leak,$(SANITIZERS)),)
-BASIC_CFLAGS += -DSUPPRESS_ANNOTATED_LEAKS
 BASIC_CFLAGS += -O0
 SANITIZE_LEAK = YesCompiledWithIt
 endif

meson.build

@@ -712,7 +712,6 @@ else
   build_options_config.set('SANITIZE_ADDRESS', '')
 endif
 if get_option('b_sanitize').contains('leak')
-  libgit_c_args += '-DSUPPRESS_ANNOTATED_LEAKS'
   build_options_config.set('SANITIZE_LEAK', 'YesCompiledWithIt')
 else
   build_options_config.set('SANITIZE_LEAK', '')