Remove duplicated translation strings

CL:1213585 copied these strings to //chrome/app strings, however it
hasn't deleted from //ui/chromeos/ui_chormeos_strings.grd.

This causes issues if both resources headers are loaded in the same
file, which will happen with Files app CL:1484961

Change-Id: Id66a383a1a874c292cf10e41f08b9a25a27b8058
Reviewed-on: https://chromium-review.googlesource.com/c/1488483
Auto-Submit: Luciano Pacheco <lucmult@chromium.org>
Reviewed-by: Evan Stade <estade@chromium.org>
Reviewed-by: Dan Erat <derat@chromium.org>
Commit-Queue: Luciano Pacheco <lucmult@chromium.org>
Cr-Commit-Position: refs/heads/master@{#635731}

ui/chromeos/ui_chromeos_strings.grd

@@ -1096,40 +1096,6 @@
       <message name="IDS_IME_NAME_TRANSLITERATION_UR" desc="The input method name shows in system tray menu. Please translate only for 'transliteration'.">
         Transliteration (salam &#x2190; &#x0633;&#x0644;&#x0627;&#x0645;)
       </message>
-
-      <message name="IDS_POWER_SOURCE_PORT_LEFT" desc="The text identifying an external device, when that device is connected to the USB Type-C port on the left side of this device.">
-        USB-C device (left port)
-      </message>
-      <message name="IDS_POWER_SOURCE_PORT_RIGHT" desc="The text identifying an external device, when that device is connected to the USB Type-C port on the right side of this device.">
-        USB-C device (right port)
-      </message>
-      <message name="IDS_POWER_SOURCE_PORT_BACK" desc="The text identifying an external device, when that device is connected to the USB Type-C port on the back of this device.">
-        USB-C device (rear port)
-      </message>
-      <message name="IDS_POWER_SOURCE_PORT_FRONT" desc="The text identifying an external device, when that device is connected to the USB Type-C port on the front of this device.">
-        USB-C device (front port)
-      </message>
-      <message name="IDS_POWER_SOURCE_PORT_LEFT_FRONT" desc="The text identifying an external device, when that device is connected to a USB Type-C port on the left side of this device. In this case there are two ports on that side, so this text should refer to the front one on that side.">
-        USB-C device (left side front port)
-      </message>
-      <message name="IDS_POWER_SOURCE_PORT_LEFT_BACK" desc="The text identifying an external device, when that device is connected to a USB Type-C port on the left side of this device. In this case there are two ports on that side, so this text should refer to the back one on that side.">
-        USB-C device (left side back port)
-      </message>
-      <message name="IDS_POWER_SOURCE_PORT_RIGHT_FRONT" desc="The text identifying an external device, when that device is connected to a USB Type-C port on the right side of this device. In this case there are two ports on that side, so this text should refer to the front one on that side.">
-        USB-C device (right side front port)
-      </message>
-      <message name="IDS_POWER_SOURCE_PORT_RIGHT_BACK" desc="The text identifying an external device, when that device is connected to a USB Type-C port on the right side of this device. In this case there are two ports on that side, so this text should refer to the back one on that side.">
-        USB-C device (right side back port)
-      </message>
-      <message name="IDS_POWER_SOURCE_PORT_BACK_LEFT" desc="The text identifying an external device, when that device is connected to a USB Type-C port on the back of this device. In this case there are two ports on the back, so this text should refer to the one on the left.">
-        USB-C device (left port in the back)
-      </message>
-      <message name="IDS_POWER_SOURCE_PORT_BACK_RIGHT" desc="The text identifying an external device, when that device is connected to a USB Type-C port on the back of this device. In this case there are two ports on the back, so this text should refer to the one on the right.">
-        USB-C device (right port in the back)
-      </message>
-      <message name="IDS_POWER_SOURCE_PORT_UNKNOWN" desc="The text referring to the device to charge from, when its port location cannot be determined.">
-        USB-C device
-      </message>
     </messages>
   </release>
 </grit>