remove unit test only flag from add_libc_tests

Author: AlyElashram

libc/test/src/string/CMakeLists.txt

@@ -20,7 +20,6 @@ add_libc_test(
 
 add_libc_test(
   mempcpy_test
-  UNIT_TEST_ONLY
   SUITE
     libc-string-tests
   SRCS
@@ -41,7 +40,6 @@ add_libc_test(
 
 add_libc_test(
   memchr_test
-  UNIT_TEST_ONLY
   SUITE
     libc-string-tests
   SRCS
@@ -52,7 +50,6 @@ add_libc_test(
 
 add_libc_test(
   memrchr_test
-  UNIT_TEST_ONLY
   SUITE
     libc-string-tests
   SRCS
@@ -73,7 +70,6 @@ add_libc_test(
 
 add_libc_test(
   stpncpy_test
-  UNIT_TEST_ONLY
   SUITE
     libc-string-tests
   SRCS
@@ -84,7 +80,6 @@ add_libc_test(
 
 add_libc_test(
   strcat_test
-  UNIT_TEST_ONLY
   SUITE
     libc-string-tests
   SRCS
@@ -136,7 +131,6 @@ add_libc_test(
 
 add_libc_test(
   strcoll_test
-  UNIT_TEST_ONLY
   SUITE
     libc-string-tests
   SRCS
@@ -147,7 +141,6 @@ add_libc_test(
 
 add_libc_test(
   strcpy_test
-  UNIT_TEST_ONLY
   SUITE
     libc-string-tests
   SRCS
@@ -303,7 +296,6 @@ add_libc_test(
 
 add_libc_test(
   strsep_test
-  UNIT_TEST_ONLY
   SUITE
     libc-string-tests
   SRCS
@@ -324,7 +316,6 @@ add_libc_test(
 
 add_libc_test(
   strspn_test
-  UNIT_TEST_ONLY
   SUITE
     libc-string-tests
   SRCS