Simplify float, int power function #2999

Job	Run time
Pylint	4m 24s
Mypy	2m 49s
Documentation	3m 42s
Tests for downstream project arraycontext	3m 55s
Conda Examples	3m 27s
Tests for downstream project meshmode	19m 31s
Tests for downstream project Firedrake	18m 0s
Flake8	26s
Tests for downstream project grudge	11m 1s
Tests for downstream project pytential	47m 4s
Conda Pytest without arg check	6m 6s
Tests for downstream project pytato	7m 39s
Conda Pytest Twice (for cache behavior)	7m 29s
Conda Pytest (ubuntu-latest)	7m 34s
Conda Pytest with Intel CL	5m 51s
Conda Pytest (macos-latest)	7m 28s
	2h 36m 26s

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