fix(Input): correct call of clearTextInput

[KillerCodeMonkey]

Do not pass $event to clearTextInput method since it does not accept arguments.

Short description of what this resolves:

clearTextInput function does not accept any arguments, but it is called with $event in the template.

Changes proposed in this pull request:

• do not call clearTextInput with $event as argument

Fixes:
This is one issue if you run angular template checks.
e.g. if you run ngc with

"angularCompilerOptions": {
  "fullTemplateTypeCheck": true
}

in your tsconfig.json