CLN: remove unused fields.pyx code/asvs (#44150)

Author: jbrockmendel

asv_bench/benchmarks/tslibs/fields.py

@@ -12,7 +12,7 @@
 class TimeGetTimedeltaField:
  params = [
  _sizes,
- ["days", "h", "s", "seconds", "ms", "microseconds", "us", "ns", "nanoseconds"],
+ ["days", "seconds", "microseconds", "nanoseconds"],
  ]
  param_names = ["size", "field"]
 

pandas/_libs/tslibs/fields.pyx

@@ -487,28 +487,6 @@ def get_timedelta_field(const int64_t[:] tdindex, str field):
  out[i] = tds.days
  return out
 
- elif field == 'h':
- with nogil:
- for i in range(count):
- if tdindex[i] == NPY_NAT:
- out[i] = -1
- continue
-
- td64_to_tdstruct(tdindex[i], &tds)
- out[i] = tds.hrs
- return out
-
- elif field == 's':
- with nogil:
- for i in range(count):
- if tdindex[i] == NPY_NAT:
- out[i] = -1
- continue
-
- td64_to_tdstruct(tdindex[i], &tds)
- out[i] = tds.sec
- return out
-
  elif field == 'seconds':
  with nogil:
  for i in range(count):
@@ -520,17 +498,6 @@ def get_timedelta_field(const int64_t[:] tdindex, str field):
  out[i] = tds.seconds
  return out
 
- elif field == 'ms':
- with nogil:
- for i in range(count):
- if tdindex[i] == NPY_NAT:
- out[i] = -1
- continue
-
- td64_to_tdstruct(tdindex[i], &tds)
- out[i] = tds.ms
- return out
-
  elif field == 'microseconds':
  with nogil:
  for i in range(count):
@@ -542,28 +509,6 @@ def get_timedelta_field(const int64_t[:] tdindex, str field):
  out[i] = tds.microseconds
  return out
 
- elif field == 'us':
- with nogil:
- for i in range(count):
- if tdindex[i] == NPY_NAT:
- out[i] = -1
- continue
-
- td64_to_tdstruct(tdindex[i], &tds)
- out[i] = tds.us
- return out
-
- elif field == 'ns':
- with nogil:
- for i in range(count):
- if tdindex[i] == NPY_NAT:
- out[i] = -1
- continue
-
- td64_to_tdstruct(tdindex[i], &tds)
- out[i] = tds.ns
- return out
-
  elif field == 'nanoseconds':
  with nogil:
  for i in range(count):