[CI] Remove additional PPA installation on Ubuntu (#370) #2228

Job	Run time
python-lint	5s
clang-format	11s
ubuntu-clang-build	1m 43s
ubuntu-gcc-build	1m 36s
macos-clang-build	2m 18s
windows-clang-build	3m 12s
windows-msvc-build	3m 45s
ubuntu-gcc-test	4m 15s
ubuntu-clang-sanitizer-build	2m 3s
ubuntu-clang-test	4m 42s
macos-clang-test	2m 46s
windows-clang-test	1m 29s
ubuntu-clang-sanitizer-test	1m 46s
windows-msvc-test	2m 23s
windows-clang-test-extended	2m 13s
macos-clang-test-extended	2m 46s
ubuntu-gcc-test-extended	5m 6s
ubuntu-clang-test-extended	4m 45s
ubuntu-clang-sanitizer-test-extended	2m 39s
windows-msvc-test-extended	2m 36s
ubuntu-gcc-build-codecov	4m 3s
ubuntu-gcc-build-perf-stats	1m 59s
	58m 21s

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