remove unused (pandas-dev#19466)

Author: jbrockmendel

pandas/_libs/src/period_helper.c

@@ -1275,38 +1275,6 @@ npy_int64 get_python_ordinal(npy_int64 period_ordinal, int freq) {
     return toDaily(period_ordinal, 'E', &af_info) + ORD_OFFSET;
 }
 
-char *str_replace(const char *s, const char *old, const char *new) {
-    char *ret;
-    int i, count = 0;
-    size_t newlen = strlen(new);
-    size_t oldlen = strlen(old);
-
-    for (i = 0; s[i] != '\0'; i++) {
-        if (strstr(&s[i], old) == &s[i]) {
-            count++;
-            i += oldlen - 1;
-        }
-    }
-
-    ret = PyArray_malloc(i + 1 + count * (newlen - oldlen));
-    if (ret == NULL) {
-        return (char *)PyErr_NoMemory();
-    }
-
-    i = 0;
-    while (*s) {
-        if (strstr(s, old) == s) {
-            strncpy(&ret[i], new, sizeof(char) * newlen);
-            i += newlen;
-            s += oldlen;
-        } else {
-            ret[i++] = *s++;
-        }
-    }
-    ret[i] = '\0';
-
-    return ret;
-}
 
 // function to generate a nice string representation of the period
 // object, originally from DateObject_strftime

pandas/_libs/src/period_helper.h

@@ -112,15 +112,6 @@ frequency conversion routines.
 
 #define INT_ERR_CODE INT32_MIN
 
-#define MEM_CHECK(item)          \
-    if (item == NULL) {          \
-        return PyErr_NoMemory(); \
-    }
-#define ERR_CHECK(item) \
-    if (item == NULL) { \
-        return NULL;    \
-    }
-
 typedef struct asfreq_info {
     int from_week_end;  // day the week ends on in the "from" frequency
     int to_week_end;    // day the week ends on in the "to" frequency
@@ -182,7 +173,6 @@ int pminute(npy_int64 ordinal, int freq);
 int psecond(npy_int64 ordinal, int freq);
 int pdays_in_month(npy_int64 ordinal, int freq);
 
-double getAbsTime(int freq, npy_int64 dailyDate, npy_int64 originalDate);
 char *c_strftime(struct date_info *dinfo, char *fmt);
 int get_yq(npy_int64 ordinal, int freq, int *quarter, int *year);
 

pandas/_libs/tslibs/period.pyx

@@ -372,15 +372,6 @@ cdef object _period_strftime(int64_t value, int freq, object fmt):
 ctypedef int (*accessor)(int64_t ordinal, int freq) except INT32_MIN
 
 
-def get_period_field(int code, int64_t value, int freq):
-    cdef accessor f = _get_accessor_func(code)
-    if f is NULL:
-        raise ValueError('Unrecognized period code: %d' % code)
-    if value == iNaT:
-        return np.nan
-    return f(value, freq)
-
-
 def get_period_field_arr(int code, ndarray[int64_t] arr, int freq):
     cdef:
         Py_ssize_t i, sz

pandas/tests/scalar/test_period.py

@@ -914,9 +914,6 @@ def test_round_trip(self):
 
 class TestPeriodField(object):
 
-    def test_get_period_field_raises_on_out_of_range(self):
-        pytest.raises(ValueError, libperiod.get_period_field, -1, 0, 0)
-
     def test_get_period_field_array_raises_on_out_of_range(self):
         pytest.raises(ValueError, libperiod.get_period_field_arr, -1,
                       np.empty(1), 0)