minor whitespace fixes

app/src/main/java/app/grapheneos/pdfviewer/loader/DocumentPropertiesLoader.kt

@@ -108,6 +108,4 @@ class DocumentPropertiesLoader(
         }
         return collections
     }
-
-
 }

app/src/main/java/app/grapheneos/pdfviewer/loader/DocumentProperty.kt

@@ -32,5 +32,4 @@ enum class DocumentProperty(
     Producer(key = PRODUCER_KEY, nameResource = R.string.producer),
     Creator(key = CREATOR_KEY, nameResource = R.string.creator),
     PDFVersion(key = PDF_VERSION_KEY, nameResource = R.string.pdf_version);
-
 }

app/src/main/java/app/grapheneos/pdfviewer/loader/PDFJsPropertiesToDocumentPropertyConverter.kt

@@ -44,6 +44,4 @@ class PDFJsPropertiesToDocumentPropertyConverter(
         }
         return value
     }
-
-
 }