remove unused ConfigDBAccessSvc, the backend using Coral

• [2018-07-13 00:09] Validation started with lhcb-lcg-dev3#584
• [2018-07-13 00:11] Validation started with lhcb-head#1917
• [2018-07-13 00:13] Validation started with lhcb-lcg-dev4#584
• [2018-07-13 00:15] Validation started with lhcb-gaudi-head#1929
• [2018-07-13 00:18] Validation started with lhcb-tdr-test#213
• [2018-07-14 00:13] Validation started with lhcb-lcg-dev3#585
• [2018-07-14 00:13] Validation started with lhcb-head#1918
• [2018-07-14 00:16] Validation started with lhcb-gaudi-head#1930
• [2018-07-14 00:16] Validation started with lhcb-lcg-dev4#585
• [2018-07-14 00:17] Validation started with lhcb-tdr-test#214
• [2018-07-15 00:09] Validation started with lhcb-lcg-dev4#586
• [2018-07-15 00:10] Validation started with lhcb-head#1919
• [2018-07-15 00:10] Validation started with lhcb-gaudi-head#1931
• [2018-07-15 00:11] Validation started with lhcb-lcg-dev3#586
• [2018-07-15 00:13] Validation started with lhcb-tdr-test#215
• [2018-07-16 00:11] Validation started with lhcb-lcg-dev3#587
• [2018-07-16 00:12] Validation started with lhcb-tdr-test#216
• [2018-07-16 00:14] Validation started with lhcb-head#1920
• [2018-07-16 00:14] Validation started with lhcb-lcg-dev4#587
• [2018-07-16 00:16] Validation started with lhcb-gaudi-head#1932
• [2018-07-16 11:02] Validation started with lhcb-tdr-test#217
• [2018-07-16 13:08] Validation started with lhcb-gaudi-merge#542

It breaks 7 tests in Hlt, see https://lhcb-nightlies.cern.ch/logs/tests/nightly/lhcb-head/1918/x86_64-slc6-gcc7-opt/Hlt/

Please update the tests or remove them, and close this discussion when it's done

@rmatev FYI

resolved all discussions

merged

mentioned in commit 588b2aa6

mentioned in commit 062a96f0

mentioned in commit 9d95bdd2

mentioned in commit 0b800c22

mentioned in merge request !1792 (closed)

mentioned in commit 1d8f91f0

mentioned in commit 9bfb504d

mentioned in commit c770f4fe

mentioned in merge request !1878 (merged)

mentioned in merge request !1878 (merged)

mentioned in commit dc304992