datatop: Remove unused variables from datatop_ip_table_poll.c

 * Introduced by commit:
    "datatop: add support to capture ip table stats

 * Fixes the following errors:
    128:6: error: unused variable 'i' [-Werror,-Wunused-variable]
    182:36: error: unused variable 'dpset' [-Werror,-Wunused-variable]
    183:28: error: unused variable 'curr_ptr' [-Werror,-Wunused-variable]
    197:38: error: unused parameter 'arg' [-Werror,-Wunused-parameter]

Change-Id: I4241cccae7ac90a9032e08f442d5a102465c399b
1 file changed