A convicted murderer had his postconviction petition thrown out by a state appeals panel Tuesday after the panel found the new eyewitness testimony he presented was not actually new evidence.The 1st District Appellate Court found the evidence Shannon Evans presented in his petition was not newly discovered and it rehashed the same points he made during his March 2009 trial.“[R]egardless of whether [Tiara] Murph’s affidavit qualifies as newly discovered, it is readily apparent that it is cumulative of [Markina …