Move completion settings page to TextEditor plugin.

Change-Id: I12b7828d23d599e5903237d0cc2a3c0440e1b07d
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>

src/plugins/cpptools/cpptools.pro

@@ -12,8 +12,6 @@ HEADERS += \
     clangdiagnosticconfig.h \
     clangdiagnosticconfigsmodel.h \
     clangdiagnosticconfigswidget.h \
-    commentssettings.h \
-    completionsettingspage.h \
     cppchecksymbols.h \
     cppclassesfilter.h \
     cppcodeformatter.h \
@@ -90,8 +88,6 @@ SOURCES += \
     clangdiagnosticconfig.cpp \
     clangdiagnosticconfigsmodel.cpp \
     clangdiagnosticconfigswidget.cpp \
-    commentssettings.cpp \
-    completionsettingspage.cpp \
     cppchecksymbols.cpp \
     cppclassesfilter.cpp \
     cppcodeformatter.cpp \
@@ -156,7 +152,6 @@ SOURCES += \
 
 FORMS += \
     clangdiagnosticconfigswidget.ui \
-    completionsettingspage.ui \
     cppcodemodelsettingspage.ui \
     cppcodestylesettingspage.ui \
     cppfilesettingspage.ui