Remove "sRGB IEC61966-2.1" profile to supress libpng warning

The above ICC profile causes the following libpng warnings while APK
packaging.

* libpng warning: iCCP: known incorrect sRGB profile
* libpng warning: iCCP: profile 'icc': 'RGB ': RGB color space not
  permitted on grayscale PNG

Bug: 11869853
Change-Id: Ida296d9e3bbd2abaae7c7500d77c8dc54d8b2382

parent a8cd7647

java/res/drawable-hdpi/sym_keyboard_feedback_tab.png

−1.73 KiB (2.29 KiB)

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java/res/drawable-hdpi/sym_keyboard_space.png

−2.23 KiB (1.02 KiB)

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java/res/drawable-mdpi/more_keys_divider.png

−2.6 KiB (276 B)

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java/res/drawable-mdpi/more_suggestions_divider.png

−2.6 KiB (276 B)

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java/res/drawable-mdpi/sym_keyboard_feedback_tab.png

−2.62 KiB (846 B)

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