Remove qmake build files

Removes qmake as a build system for building Qt Creator itself.
Keep them for some tests that are not completely moved to CMake yet.

Change-Id: I846c6ef65626b6dfae6375fdc85d00677aa8c2fb
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/libs/ssh/CMakeLists.txt

@@ -20,5 +20,3 @@ add_qtc_library(QtcSsh
     sshremoteprocessrunner.cpp sshremoteprocessrunner.h
     sshsettings.cpp sshsettings.h
 )
-# transitional qmake plugin build support
-qtc_add_public_header(ssh_dependencies.pri)

src/libs/ssh/ssh.pro

@@ -1,37 +0,0 @@
-QT += gui network
-DEFINES += QTCSSH_LIBRARY
-
-include(../../qtcreatorlibrary.pri)
-
-SOURCES = \
-    sftpdefs.cpp \
-    sftpfilesystemmodel.cpp \
-    sftpsession.cpp \
-    sftptransfer.cpp \
-    sshconnection.cpp \
-    sshconnectionmanager.cpp \
-    sshkeycreationdialog.cpp \
-    sshlogging.cpp \
-    sshprocess.cpp \
-    sshremoteprocess.cpp \
-    sshremoteprocessrunner.cpp \
-    sshsettings.cpp
-
-HEADERS = \
-    sftpdefs.h \
-    sftpfilesystemmodel.h \
-    sftpsession.h \
-    sftptransfer.h \
-    sshconnection.h \
-    sshconnectionmanager.h \
-    sshkeycreationdialog.h \
-    sshlogging_p.h \
-    sshprocess.h \
-    sshremoteprocess.h \
-    sshremoteprocessrunner.h \
-    sshsettings.h \
-    ssh_global.h
-
-FORMS = $$PWD/sshkeycreationdialog.ui
-
-RESOURCES += $$PWD/ssh.qrc

src/libs/ssh/ssh_dependencies.pri

@@ -1,2 +0,0 @@
-QTC_LIB_NAME = QtcSsh
-QTC_LIB_DEPENDS += utils