To use the standard android speech recognition you have to install/deploy the com.google.android.voicesearch apk package (the version of Voicesearch.apk must be the one that came with the Android 4.0 or later, it did not work with the older version of the Voicesearch.apks)
Just install it by using adb install < apk-file >
Then you should be able to use the voice recognition feature of android on your glass device.
Updated : After Google Glass is Updated to XE9 you dont have to install the Voice Apk. The default one works fine. To uninstall the Voice Search Use the following command
adb uninstall com.google.android.voicesearch