remove header files from cmake

app/src/main/cpp/sox/CmakeLists.txt

@@ -22,19 +22,15 @@ endif (NOT EXTERNAL_GSM)
 
 set(effects_srcs
         bend.c
-        biquad.h
         biquad.c
         biquads.c
         chorus.c
         compand.c
-        compandt.h
         compandt.c
         contrast.c
         dcshift.c
         delay.c
-        dft_filter.h
         dft_filter.c
-        dither.h
         dither.c
         divide.c
         downsample.c
@@ -42,7 +38,6 @@ set(effects_srcs
         echo.c
         echos.c
         fade.c
-        fft4g.h
         fft4g.c
         fir.c
         firfit.c
@@ -53,7 +48,6 @@ set(effects_srcs
         loudness.c
         mcompand.c
         noiseprof.c
-        noisered.h
         noisered.c
         output.c
         overdrive.c
@@ -83,27 +77,21 @@ set(effects_srcs
         )
 set(formats_srcs
         adpcm.c
-        adpcm.h
-        adpcms.h
         adpcms.c
         al-fmt.c
         coreaudio.c
         f4-fmt.c
         f8-fmt.c
-        g711.h
         g711.c
         g721.c
         g723_24.c
         g723_40.c
         g72x.c
-        g72x.h
         ima-fmt.c
-        ima_rw.h
         ima_rw.c
         la-fmt.c
         lu-fmt.c
         raw.c
-        raw.h
         raw-fmt.c
         s1-fmt.c
         s2-fmt.c
@@ -117,7 +105,6 @@ set(formats_srcs
         ul-fmt.c
         voc.c
         vox.c
-        vox.h
         vox-fmt.c
         wav.c
         )