python3-*: Update recipes with pytest ptests to use the new ptest-python-pytest class

The newly added ptest-python-pytest removes duplication for:
  1. Copying pytest files to the ptest directory
  2. Adding standard pytest dependencies
  3. Adding a common run-ptest script using pytest

(From OE-Core rev: 8d84d9e19b9292b1863921611924714d77c41d21)

Signed-off-by: Derek Straka <derek@asterius.io>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/python/python3-more-itertools_10.5.0.bb

@@ -5,11 +5,7 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=3396ea30f9d21389d7857719816f83b5"
 
 SRC_URI[sha256sum] = "5482bfef7849c25dc3c6dd53a6173ae4795da2a41a80faea6700d9f5846c5da6"
 
-inherit pypi python_flit_core ptest
-
-SRC_URI += " \
-	file://run-ptest \
-"
+inherit pypi python_flit_core ptest-python-pytest
 
 RDEPENDS:${PN} += " \
         python3-asyncio \
@@ -17,13 +13,6 @@ RDEPENDS:${PN} += " \
 
 RDEPENDS:${PN}-ptest += " \
 	python3-statistics \
-	python3-pytest \
-	python3-unittest-automake-output \
         "
 
-do_install_ptest() {
-	install -d ${D}${PTEST_PATH}/tests
-	cp -rf ${S}/tests/* ${D}${PTEST_PATH}/tests/
-}
-
 BBCLASSEXTEND = "native nativesdk"