usb: gadget: remove ecm_cleanup in disconnect
usb: gadget: remove ecm_cleanup in disconnect

ecm_cleanup should be called in unbind since ecm_ipa_init/configure
are called at bind, and this was indeed changed lately.
This instance causes a crash since ecm_upa_cleanup is called before
ecm_ipa_disconnect is called. (since it's called in the disconnect workQ)

Change-Id: I0ec187b89c147ae489ce9c470f6401d58fe58f91
Signed-off-by: Lena Salman <1fd51afc30cf4384ca4f873323a134889ed11aea@codeaurora.org>
Signed-off-by: Amit Blay <d300365ad1647917745bf1395e907c4e57ac02c1@codeaurora.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas