TEST/GTEST: Drop counters that are set but never read

GCC 16 promotes these to errors under -Werror=unused-but-set-variable
and the Fedora 44 devel build stops on them. Each counter is only ever
incremented; the tests assert on other values.

Signed-off-by: Alexey Rivkin <arivkin@nvidia.com>

Author: Alexey-Rivkin

test/gtest/ucs/test_pgtable.cc

@@ -189,7 +189,6 @@ UCS_TEST_F(test_pgtable, multi_search) {
         ucs_pgt_addr_t max = 0;
 
         /* generate random regions */
-        unsigned num_regions = 0;
         for (int i = 0; i < 200 / ucs::test_time_multiplier(); ++i) {
             ucs_pgt_addr_t start = (ucs::rand() & 0x7fffffff) << 24;
             size_t         size  = ucs_min((size_t)ucs::rand(),
@@ -203,7 +202,6 @@ UCS_TEST_F(test_pgtable, multi_search) {
             min = ucs_min(start, min);
             max = ucs_max(start, max);
             regions.push_back(make_region(start, end));
-            ++num_regions;
         }
 
         /* Insert regions */

test/gtest/uct/ib/test_ud_pending.cc

@@ -197,7 +197,6 @@ UCS_TEST_SKIP_COND_P(test_ud_pending, window,
 UCS_TEST_SKIP_COND_P(test_ud_pending, tx_wqe,
                      !check_caps(UCT_IFACE_FLAG_PUT_SHORT))
 {
-    int i;
     uct_pending_req_t r;
     ucs_status_t status;
 
@@ -208,10 +207,8 @@ UCS_TEST_SKIP_COND_P(test_ud_pending, tx_wqe,
     connect();
     /* set big window */
     set_tx_win(m_e1, 8192);
-    i = 0;
     do {
        status = tx(m_e1);
-       i++;
     } while (status == UCS_OK);
 
     r.func = pending_cb_dispatch;

test/gtest/uct/test_mem.cc

@@ -229,7 +229,6 @@ UCS_TEST_P(test_mem, mmap_fixed) {
     const size_t            n_tryes     = 101;
     uct_alloc_method_t      meth;
     size_t                  length      = 1;
-    size_t                  n_success;
     ucs::mmap_fixed_address p_addr(page_size * 2 * (n_tryes + 1));
     void*                   curr_addr;
 
@@ -245,7 +244,6 @@ UCS_TEST_P(test_mem, mmap_fixed) {
     params.name            = "test";
     params.mem_type        = UCS_MEMORY_TYPE_HOST;
 
-    n_success = 0;
     curr_addr = *p_addr;
 
     for (i = 0; i < n_tryes; ++i) {
@@ -254,7 +252,6 @@ UCS_TEST_P(test_mem, mmap_fixed) {
 
         status = uct_mem_alloc(length, &meth, 1, &params, &uct_mem);
         if (status == UCS_OK) {
-            ++n_success;
             EXPECT_EQ(meth, uct_mem.method);
             EXPECT_EQ(curr_addr, uct_mem.address);
             EXPECT_GE(uct_mem.length, (size_t)1);