[General]: Remove deprecated code

[deandreamatias]

Is there an existing issue for this?

• I have searched the existing issues

Package/Plugin version

9.7.0

What you'd like to happen

Remove all deprecated properties, widgets or related on code

Alternatives you've considered

• Remove maxChips property from FormBuilderFilterChip. Don't have a effective use
• Remove resetIcon property from FormBuilderDateTimePicker
• Remove onPopInvoked property from FormBuilder
• Remove invalidateField and invalidateFirstField methods from FormBuilderState
• Rename FormBuilderChoiceChip to FormBuilderChoiceChips

Aditional information

Need to create new major version 10.0.0