Remove functionally-empty ServiceRemoteRESTTests

This test didn't exercise and specific behavior, just that the type
returned by the `init` was the object's type and that the `api`
parameter was set. We can do without those checks given the service
behavior is tested elsewhere via its subclasses and those settings are
therefore verified many many times.

WordPressKit.xcodeproj/project.pbxproj

@@ -260,7 +260,6 @@
  740B23EA1F17FB4200067A2A /* xmlrpc-wp-getpost-success.xml in Resources */ = {isa = PBXBuildFile; fileRef = 740B23E01F17FB4200067A2A /* xmlrpc-wp-getpost-success.xml */; };
  740B23ED1F17FB7E00067A2A /* xmlrpc-bad-username-password-error.xml in Resources */ = {isa = PBXBuildFile; fileRef = 740B23EB1F17FB7E00067A2A /* xmlrpc-bad-username-password-error.xml */; };
  740B23EE1F17FB7E00067A2A /* xmlrpc-malformed-request-xml-error.xml in Resources */ = {isa = PBXBuildFile; fileRef = 740B23EC1F17FB7E00067A2A /* xmlrpc-malformed-request-xml-error.xml */; };
- 74155E251EF87DDF00A06AEA /* ServiceRemoteRESTTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 74155E241EF87DDF00A06AEA /* ServiceRemoteRESTTests.m */; };
  742362D61F10250600BD0A7F /* MenusServiceRemote.h in Headers */ = {isa = PBXBuildFile; fileRef = 742362D41F10250600BD0A7F /* MenusServiceRemote.h */; settings = {ATTRIBUTES = (Public, ); }; };
  742362D71F10250600BD0A7F /* MenusServiceRemote.m in Sources */ = {isa = PBXBuildFile; fileRef = 742362D51F10250600BD0A7F /* MenusServiceRemote.m */; };
  7430C9A31F1927180051B8E6 /* ReaderPostServiceRemote.h in Headers */ = {isa = PBXBuildFile; fileRef = 7430C99D1F1927180051B8E6 /* ReaderPostServiceRemote.h */; settings = {ATTRIBUTES = (Public, ); }; };
@@ -994,7 +993,6 @@
  740B23E01F17FB4200067A2A /* xmlrpc-wp-getpost-success.xml */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xml; path = "xmlrpc-wp-getpost-success.xml"; sourceTree = "<group>"; };
  740B23EB1F17FB7E00067A2A /* xmlrpc-bad-username-password-error.xml */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xml; path = "xmlrpc-bad-username-password-error.xml"; sourceTree = "<group>"; };
  740B23EC1F17FB7E00067A2A /* xmlrpc-malformed-request-xml-error.xml */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xml; path = "xmlrpc-malformed-request-xml-error.xml"; sourceTree = "<group>"; };
- 74155E241EF87DDF00A06AEA /* ServiceRemoteRESTTests.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = ServiceRemoteRESTTests.m; sourceTree = "<group>"; };
  742362D41F10250600BD0A7F /* MenusServiceRemote.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MenusServiceRemote.h; sourceTree = "<group>"; };
  742362D51F10250600BD0A7F /* MenusServiceRemote.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = MenusServiceRemote.m; sourceTree = "<group>"; };
  7430C99D1F1927180051B8E6 /* ReaderPostServiceRemote.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ReaderPostServiceRemote.h; sourceTree = "<group>"; };
@@ -1929,7 +1927,6 @@
  74A923B11F2BE2DF00EC8F92 /* RESTTestable.swift */,
  FE5096512A13938500DDD071 /* SharingServiceRemoteTests.swift */,
  FEFFD99A26C1598F00F34231 /* ShareAppContentServiceRemoteTests.swift */,
- 74155E241EF87DDF00A06AEA /* ServiceRemoteRESTTests.m */,
  731BA83521DECD61000FDFCD /* SiteCreationRequestEncodingTests.swift */,
  731BA83721DECD97000FDFCD /* SiteCreationResponseDecodingTests.swift */,
  74C473AE1EF2F7D1009918F2 /* SiteManagementServiceRemoteTests.swift */,
@@ -3364,7 +3361,6 @@
  FE5096682A309E4600DDD071 /* JetpackSocialServiceRemoteTests.swift in Sources */,
  74A44DD41F13C6D8006CD8F4 /* RemoteNotificationTests.swift in Sources */,
  74A923B21F2BE2DF00EC8F92 /* RESTTestable.swift in Sources */,
- 74155E251EF87DDF00A06AEA /* ServiceRemoteRESTTests.m in Sources */,
  46ABD0EA262EEE0400C7FF24 /* AppTransportSecuritySettingsTests.swift in Sources */,
  74D67F0A1F15C24C0010C5ED /* PeopleServiceRemoteTests.swift in Sources */,
  4A1123A22B19690C004690CF /* MultipartFormTests.swift in Sources */,