Remove dead code

Change-Id: I198fb0193fed891c4dd8a8a92c29e36f6c4d48b9
(cherry picked from commit a8df8e319fa6b328534855a17e6fcac8aeb4dc25)
WaE: private field 'mnId' is not used

Change-Id: I406ebb303b1f36f827c3cbf33f8f4cf3dcaed2f1
(cherry picked from commit 8640859d6898943506f28be46c7778a677893ca8)
WaE: unused variable 'aFileNameBase'

Change-Id: I26cf27c7edc51d0a28e228c56465c3ec2ad7d35e
(cherry picked from commit 73f65ac3ef713cc53c53da301785e35b36528504)
Fix memory leak (as observed with CppunitTest_filter_ras_test)

(cherry picked from commit ba00f596cfbb78046e705f1d45264951bf03a9a1)

Change-Id: Id3fa526f01ab7dae72beb311fe0774ba1f77d8a0
Fix memory leak (as observed with CppunitTest_filter_pcx_test)

Change-Id: Ic00653cad7f15f60a8f2613938def25820d7e9ae
(cherry picked from commit c77c39056847d23a109172ff53bfac0ba4c21b39)