Updates to TCMS icons rewritting.

- Replace for-e loop with for-i loop
- Remove streams
- Related cleanups

Refer to comments in Ib63e54462508029cdf0e56c2c6a82ff4e81b02a8 (Patchset 5)

Bug: 151847511
Test: atest tests/tests/textclassifier/src/android/view/textclassifier/cts
Test: atest core/tests/coretests/src/android/view/textclassifier
Test: Select a phone number text, check that the "Call" icon shows
Change-Id: If52d84b69a047a2aeb1dba8a245765807a8f574a