[Tizen] Remove the duplicated call with Focused call

[Tizen] Remove the duplicated call with Focused call

- To call `Activate()` of IME is already called in `OnKeyInputFocusGained()`
 and `OnKeyInputFocusGained()` is called by `OnTap()`.
- So, IME activate call is called twice unnecessarily.

- Also, IME properties did not be set in `OnTap`,
  so the normal layout of input panel shows first,
 and then another type of input panel shows again. (Issue)
- Fix this issue to erase to call `Activate` in `OnTap()`.

Change-Id: Ie18b35042b0b7878efd0a8fe3fbbd5da1d3e6def
Signed-off-by: Seoyeon Kim <seoyeon2.kim@samsung.com>