Revert "Implemented CustomerService::delete"

This reverts commit 0dacf44918ed5d476bcd337de355b98e2028fdfa.
Revert "Implemented tests for CustomerService::delete()"

This reverts commit 673dd392924bd538c2c37cab3fcfdabcbb013641.
Revert "Implemented CustomerService::list()"

This reverts commit e18b9b3c17a986d89bad8ad8572e21b2f7894bcb.
Revert "Implemented tests for CustomerService::list"

This reverts commit 5189fd49bcffd9d2cf357072b828fd195b015a62.
Revert "Implemented CustomerService::get"

This reverts commit e2057f6b0d095625c845dbb4616a452525078460.
Revert "Implemented test for CustomerService::get"

This reverts commit a5eb8fd7da6fe4884899479fe6161c3593d4cdb1.
Revert "Implemented service customer save/create/update."

This reverts commit a747c75b9b0b3e47a1ea800e979e29fd00f9d333.
Revert "TDD create customer."

This reverts commit a9f06a3a03ba2555b0f28d079098888e3d4da000.
Revert "no message"

This reverts commit 8cbd177885f6b7dfb4904982b9644f3a7abcf37d.