tests: mem_alloc: remove fixed testcase names from yaml

We now use new ztest API, so we can get those from the symbols file.

Signed-off-by: Anas Nashif <[email protected]>

tests/lib/mem_alloc/testcase.yaml

@@ -5,50 +5,20 @@ tests:
     extra_args: CONF_FILE=prj.conf
     platform_exclude: twr_ke18f
     tags: clib minimal_libc userspace
-    testcases:
-    - realloc
-    - free
-    - malloc_align
-    - memalloc_all
-    - calloc
-    - malloc
-    - memalloc_max
-    - reallocarray
   libraries.libc.minimal.mem_alloc_negative_testing:
     extra_args: CONF_FILE=prj_negative_testing.conf
     platform_exclude: twr_ke18f
     tags: clib minimal_libc userspace
-    testcases:
-    - no_mem_realloc
-    - no_mem_malloc
   libraries.libc.newlib.mem_alloc:
     extra_args: CONF_FILE=prj_newlib.conf
     filter: TOOLCHAIN_HAS_NEWLIB == 1
     min_ram: 16
     platform_exclude: twr_ke18f native_posix_64 nrf52_bsim
     tags: clib newlib userspace
-    testcases:
-    - realloc
-    - free
-    - malloc_align
-    - memalloc_all
-    - calloc
-    - malloc
-    - memalloc_max
-    - reallocarray
   libraries.libc.newlib_nano.mem_alloc:
     extra_args: CONF_FILE=prj_newlibnano.conf
     filter: CONFIG_HAS_NEWLIB_LIBC_NANO
     tags: clib newlib userspace
-    testcases:
-    - realloc
-    - free
-    - malloc_align
-    - memalloc_all
-    - calloc
-    - malloc
-    - memalloc_max
-    - reallocarray
   libraries.libc.picolibc.mem_alloc:
     extra_args: CONF_FILE=prj_picolibc.conf
     filter: CONFIG_PICOLIBC_SUPPORTED