Remove gpr_slice_to_cstring as it is not used anywhere

include/grpc/support/slice.h

@@ -175,10 +175,6 @@ gpr_slice gpr_empty_slice(void);
 int gpr_slice_cmp(gpr_slice a, gpr_slice b);
 int gpr_slice_str_cmp(gpr_slice a, const char *b);
 
-/* Returns a c-string representation of a slice. Useful for logging or debugging
-   purposes only. The string representation can change in future */
-char *gpr_slice_to_cstring(gpr_slice slice);
-
 #ifdef __cplusplus
 }
 #endif

src/core/support/slice.c

@@ -341,10 +341,3 @@ int gpr_slice_str_cmp(gpr_slice a, const char *b) {
   if (d != 0) return d;
   return memcmp(GPR_SLICE_START_PTR(a), b, b_length);
 }
-
-char *gpr_slice_to_cstring(gpr_slice slice) {
-  char *result = gpr_malloc(GPR_SLICE_LENGTH(slice) + 1);
-  memcpy(result, GPR_SLICE_START_PTR(slice), GPR_SLICE_LENGTH(slice));
-  result[GPR_SLICE_LENGTH(slice)] = '\0';
-  return result;
-}

test/core/support/slice_test.c

@@ -221,7 +221,6 @@ static void test_slice_from_copied_string_works(void) {
   LOG_TEST_NAME("test_slice_from_copied_string_works");
 
   slice = gpr_slice_from_copied_string(text);
-  gpr_log(GPR_INFO, "slice: %s", gpr_slice_to_cstring(slice));
   GPR_ASSERT(strlen(text) == GPR_SLICE_LENGTH(slice));
   GPR_ASSERT(0 ==
              memcmp(text, GPR_SLICE_START_PTR(slice), GPR_SLICE_LENGTH(slice)));